I'd see that too, except that (A) Kate is even more annoying than what Elizabeth was doing at the time (it was the scene where Elizabeth was calling out James, Jack, and Will for being idiots over the heart of Jones) and (B) Kate used the opportunity to shame Elizabeth for trying to talk sense into the men instead of nicely sitting on the ground the way Will told her to.

And for the second, I have no idea. Direct quote though:

"Johnny should be getting Orlando and Keira's money too, because they're a) not real pirates (IE: they're poseurs)"

She was in an unbalanced state of mind over how "little" Depp was getting paid. -_-