If feel for you. I went through this with my ex. I signed over everything; house, car, furniture. I left with a box of leftover dishes and cutlery. I had a visitation agreement which she spent five years frustrating including bringing in a Child Psychologist.
I had the Police called on me on trumped up charges and her father and three brothers showed up at one visit and threatened to beat the crap out of me.
For some reason love can very quickly turn into hate if your partner is mentally unstable.
Prayers for you brother and good luck.