Oh wow I clearly have to reread Kel RIGHT NOW. I think I have ... at least the first two/possibly all four books around the house somewhere? I hope so!

Her overcoming her fear of heights is definitely one of the things I remember most strongly liking about those books when I read them way back when, because I am absolutely petrified of heights in an awful visceral physical way, and reading about Kel dealing with her fear was AWESOME.