Hi Chiel, been a while since I wrote around here something but think it through for what's best for you.
From what I got to read your situation is messy but hope you can go through this standard tall even after all the hardships this was.
Personally would not recommend go back, if someone is not willing to help or hear u it just trouble in the long run, talk from a case I see way to often that is not me but it hurts to see someone that ended trapping themselves in it.
Hope that whatever the outcome the major factor is that you will be able to be in a place you don't feel excluded or pressure, that it doesn't become a situation you have to endure.
Wish you the best, you are a brilliant person and alway take in mind that you deserve good things, you are worth it after all.
Thanks for your hard work.