It's really annoying isn't it? If she can kick Lloyd and Harley around like soccer balls, why not her enemies as well? :/ And why doesn't Collette just fly everyone to the end of the dungeons, one at a time? Ah well.
I'm not sure about this, but I think that Raine has Bloody Lance (which totally suits her ) programmed as one of her attacks, and it's possible for her to use it through cheat devices and soforth. Obviously you can't learn it through conventional methods though.
It would be so cool if she had an attack like "Ruin Maniac Kick" though XD Instead of stinky Photon and Ray.