Question

I want to know if there is anything wrong with this sentence. ( pronoun assignment) kitty's parents and Briana's parents were pleased because each of the girls enjoyed their time at the center

Answer 1

Kitty should start with a capital K because it's a name, and if you aren't american then the word "center" should be centre

Answer 2

It’s not grammatically correct. It should be...
Kitty and Briana’s parents were pleased because the girls enjoyed their time at the center.