Please help! 
My sister was very young, still a teenager, when she married and soon afterwards became pregnant. We all begged her not to marry him because there was always a question mark over his past. But she loved him and obviously we all wanted to be supportive.
They had 2 babies quite soon after each other and then the next we knew the marriage was over and BIL in police custody! This didn't last long as Dsis divorced her DH. It turned out he (BIL) had been sent to prison for possession and distribution of indecent images. SS were involved, it was awful.
Anyway next thing we know she's dating again. But this new man is no saint, has a child to another woman, and there's just something odd about him. She moved in quite soon and now she's pregnant again. This is very worrying as after her first marriage ended she got a job (part time) and was talking about college but after she met him she quit the job so she's 100% reliant on benefits, obviously fair enough if you need them.
But I'm so upset that my bright pretty funny lovely sister has basically decided to spend her life on benefits and having babies.