Reader question: Looking for an organization that can help me return to the Netherlands

I assume that you are Dutch.
If you want to go to the Netherlands with your relationship, you will have to take due account of the integration process with regard to your relationship (it is wise to get married before making plans to return to the Netherlands).
Any integration for her will expire when you settle in another European country, as a Dutch citizen you can and may live in any European country without any problems and so can your wife.
I myself live in Germany with my Thai wife and our common child.

Dear,

Effectively not easy.
Start with the simple : get married officially and fulfill the administrative obligations that follow.
The lady must prepare well and pass the integration exam at the Dutch embassy.
You are well on your way with that.
Whether you still need external help afterwards, to evaluate at the time.
Good luck, and the best for your health.

Dear Henk,

I don't know about your finances but I did it myself then, but there are plenty of agencies that want to do that for you, but even then you will have to collect the information yourself.
Below how I did it. (was married and without children. With children you also need the permission of the father, I believe)

I applied for an MVV visa on February 11, 2016.
Here I will describe what I had to do to apply for it.
Maybe I can help others with this.

First I downloaded the application form from IND.nl and answered all the questions. I also went to the hospital and the doctor also had to answer questions.

Then the marriage certificate, the divorce certificate was not necessary, if you are married again. as well as my wife's birth certificate.
Also took pictures of us together, and family so they can see that it's not a sham marriage. I scanned them and pasted them into a word document.

Made copies of both passports and also copies of the previous visa page for me and my wife. Also made a copy of the integration diploma.

I made color copies of everything, including the photos. I first put everything on a USB stick and went to a copy shop with it.

February 10, before 8 am, we were at the Ministry of Foreign Affairs, which is located on the Chaeng Wattana road, close to the Dong Muang airport. There we had to have the official documents such as marriage certificate and birth certificate translated into English with an official apostille stamp on it.

When we walked to the building, we were immediately approached by people who are willing to translate everything for you. Apparently these people are legal but I didn't have them translate it anyway. Once inside you will be approached by translators again and after much insistence I handed over the papers to be translated by that person and they would also provide the stamp. I do not recommend dealing with the people outside the building, because they are not allowed to enter the building. (I thought) I haven't seen them since.
I had to pay 1100 bath per document
For an extra 400 baht I had all the papers brought to my hotel in the evening, otherwise I would have had to hang around there all day. There is a restaurant in the building so food and drinks were available there. But I didn't find it attractive.
Fortunately, we had already booked a hotel in Bangkok. So we could say where it had to be delivered
We slept in the Los Vegas hotel, which was convenient to the MRT and the Airportrail, and not expensive.

On February 11, we were able to visit the Dutch embassy without an appointment from 14:00 PM to 15:00 PM. We arrived at 13:00 because we wanted to make sure we had the correct passport photos and we had them taken across the street from the embassy. We also asked for advice on the procedure. And she checked the forms and made another correction for all that paid 800 baht. (I don't know what the corrections were)
At the embassy we also had to pay fees 3600 bath.
Something went wrong with the fingerprints at the embassy and my wife went back alone the following week by plane and BTS
Then we received a bill from the embassy of € 233;= and, the same bill from the IND also € 233:= but that turned out to be a mistake we only had to pay 1 time.

Several training institutes wanted to apply for the visa for me, but they asked 20.000 to 25.000 baht for it and then we still had to pay the fees, and the IND, ourselves. And sending the official documents, I thought that was too great a risk.

I totally spent.

Bus trip, Phitsanulok-Bangkok return 800 baht per person 1600
Translate + stamps + delivery 4800 bath 4800
Taxi 400 bath round trip from Moh chit to foreign affairs min 400
BTS and Airportrail 400 bath total 400
Taxi 200 bath from Moh chit BTS to Moh chit bus station 200
Hotel 2 nights 1400
Office at the embassy ` 800
Embassy fees 3600

So in total 13200 bath

Made extra costs because the fingerprints were not successful, so my wife had to go back.
To collect the visa she had to go back to Bangkok by plane (1 day) but that is also necessary if you have it done by the institute.

The IND website states that they must make a decision within 3 months. I hope I don't have to wait that long, but I hear it will take at least 2 months before you get a message.

On March 23, 2016, my wife received a phone call from the Dutch embassy in Bangkok that the visa was ready and that she could collect it, but bring the passport so that it can be stuck in it.
On March 24, 2016, there was a letter from the IND, at my address in the Netherlands, that my wife can collect the visa. We did consult the IND site, because we still had to fill in an MVV grant form and take it with us (this is for use in the Netherlands), the letter contained everything else we had to do and take with us.
But she only had to bring her passport and got an MVV visa stuck in it.

The visa is only valid for 3 months, so travel before that time and visit the IND in the Netherlands for an extension of 5 years, but you must have obtained the 3nd integration diploma within 2 years.

So it took a total of 41 days.
At the beginning of May 2016 we will go to the Netherlands

Dear Henk,

Unfortunately, not all readers answer your question. This is of course with the best of intentions, but I hope you don't get further confused.

If you want help, I would consult an immigration lawyer. For example, one of the lawyers who op http://www.buitenlandsepartner.nl have a banner. But if you type in your place of residence + immigration lawyer in Google, you will come a long way. Of course it costs something. You are then hundreds of euros further:

https://www.mvv-gezinshereniging.nl/faq/kosten-mvv-aanvraag

The TEV procedure can be done by most people themselves. If you sit quietly for it, you will come a long way:

1) http://www.ind.nl
1a) https://ind.nl/Familie/Paginas/Echtgenoot-of-(geregistreerd)-partner.aspx
1 B) https://ind.nl/Formulieren/7018.pdf

2) https://www.thailandblog.nl/wp-content/uploads/Immigratie-Thaise-partner-naar-Nederland1.pdf

3) https://buitenlandsepartner.nl/forumdisplay.php?45-Aanvraag-MVV-VVR-(TEV-procedure)
3a) (if you create/have an account on SBP forum, the current form has changed slightly after an update, but this completed form still gives a good impression): https://www.buitenlandsepartner.nl/showthread.php?58032-Welke-documenten-aanleveren-%28-referent-amp-vreemdeling-%29&p=628003#post628003

The most important thing to fix is:
0) read in (IND.nl)
1) that you have sufficient and sustainable income (100% minimum wage, that is more than 1500 euros off the top of my head)
2) your partner must have taken the civic integration examination abroad at the embassy. You can study for this yourself or through a course in Thailand or the Netherlands
3) when 1 and 2 are completed: arrange Thai certificates: marriage/unmarried certificate and birth certificate, an official translation and legalisations. If necessary, you can hire an office for this. There is 1 diagonally opposite the NL embassy.