Thank you guys so much. I was so angry and upset but I have most definately calmed down now. Reading all your comments has made me feel better.

I only really got to know my dad over the last 2 years and so I guess I'm not losing much. I think I was more hurt that he let her speak to me like that and still made it into something I did wrong. But it's his loss at the end of the day. My dad doesn't know his other son and grandkids and it looks as though he won't know this one either.
I'm staying with my partner, its not ideal as he lives with a friend, but its fine for now. I'm being spoilt rotten at the minute too cos my boyfriend doesn't want me to get worked up bless him.