I don't know if relationships is the right place for this but I know that a lot of you have abusive exes and may have experience of this. I am a regular and have name changed for this.
I am mid way through divorcing abusive and cheating STBXH. He lives abroad and since we separated he went months without seeing our teenage DS and weeks or months at a time with no contact. Recently he was forced to pay me maintenance for the first time. Since then he has been messaging DS relentlessly criticising and lying about me, trying to get DS to control how the maintenance money is spent and discussing plans to abduct DS to live with him abroad.
It is working. DS now speaks to me with utter disdain, resents my boundaries and believes everything his dad tells him. I have tried different approaches to deal with this, none of them are working very well. I have good legal help but I don't know how to deal with it emotionally.