I know this isn’t really to do with parenting but I recently found out that my mum is pregnant with my new half-brother however when she was raising me she abused me and I was removed from her care and I haven’t seen her since but I couldn’t imagine not being in my brothers life so I don’t know what I should do do I stay out of his life and have him believe he’s an only child or do I go contact with my mum. There’s a 15 year age difference between the two of us and I already have 3 half siblings two from each parent.