Her skills basically make it painful to be in the same room with other heroes. She has to be alone, can't use a weapon, and doesn't have the attack power or defense needed to handle even a single wave of monsters by around the fifth or sixth floor.

What's the trick? Right now, she's a detriment to my party -- I would have been better off to fire her and pick up the last cryo capsule I passed by, or any of the random heroes that I just let sit there and be killed off by incoming waves.

She is probably my least favourite hero for that very reason. She needs to be high level to hold one flank by herself, but by having her you condemn yourself to be weakened in those large battles were all heroes need to be present.