Raine I think will be fluctuating purely in a power level sense. Basic healing spells coming out overpowered, the big stuff undershooting what she was aiming for. The same will go for her offensive spells. I don't think she'll get the two mixed up, fortunately.

On a more emotional level she's going to be very frustrated by her lack of control (and a number of other factors, stacking), and will probably end up working herself to exhaustion at least once during the week. She will... probably snap at people.

I'm not sure if any of this in specific will lend itself to things, but I'm always open to plotting. c: