I don't think Kate was mean, yeah she found Bella's training humerous but heck, so did I. She knew better than anyone there what it took to expand a power, after all thats what she had been trying to do with hers. I think she knew that it was very important that Bella learn how to use and control her power and she knew what it would take.
It added to my opinion that she is an extremly strong woman (vampire) aswell as the fact that her power is amazing.
Plus it was just icing on the cake that she ended up with Garrett, they just seemed perfect for each other. Both so strong and interesting characters.











