wow..she is beautiful!! I am so glad you were able to get her. I am sure her and Trigger will get along better soon. It was like that in my house for a while...my cocker did NOT like having a baby sister. And maggie was scared of her. But now, my 26 lb cocker cowers away from my 6 lb yorkie LOL
so, it will get better
Just have to watch them for a bit and be sure to treat them equal. you don't want one being jealous of the other.
IMO