Her temperament - well, she doesn't bite at the glass if you put your hand on it...like a lot of clown triggers I've seen. She has moved some rock around a bit. But I don't think she is destructive. You have to consider her size, she could just bump a rock and knock it over easily. She is, however, nibbling on the hard coral in the middle of the tank.
Her diet, I have tried to vary her diet from Krill, formula 1, squid, NLS pellets XL formula, raw shrimp. I tried feeding her some green algae and that was a no go.