DSS is 18, he has lived on and off with us since he was a baby. DH and I have tried for custody but the courts favoured her and it’s been 50/50, however there has been long periods when he’s been with us. Last week he texted his dad saying he can’t cope and wants to move in. He is at uni. We pay his mum to support him and now he is with us and 18, we cant continue this. She is now laying on the emotional blackmail saying she’ll lose her house, she’ll be homeless if he doesn’t come back. He doesn’t want to live with her anymore because she is either drunk and angry or stoned and sad. We cannot face him going back to an unstable environment, nor do we want to give her anymore money.