I just learned that I have a half sister. My mum gave up a child for adoption before she met my dad and this woman has found her. She never even told my dad who she married 52 years ago until last month. My brothers and parents think this is great news, my world is rocked. I don’t want a new sister. I want my previously really normal family to remain as it was. Now my mom is pursuing a relationship with her, they are both going over the top as the newness of it all is so exciting. What do I do? At 48 I feel like an insecure child again. I’m jealous and angry. It makes me look back on my who,e childhood and think that our what I though was a typical challenging mother daughter relationship is because she always pined for her first daughter.