S/O doesn't want me there when telling his daughter... Great!

Brittney • Mama of 2 girls with baby number 3 on the way (hoping for a boy!!)
Well, my SO just informed me that he doesn't think I should be there when telling his 11 year old daughter we're pregnant. Sure makes me feel good... 
We're worried about how she will react, but still, I wanted to be part of that. Feeling a little hurt right now.