Done and fine with me about the music. Spirit magic might also be affected this way as well since it uses the veil and benevolent/helpful spirits as well.

Can I assume if she uses her other magic too much, the same side effects will happen as well?

Also, I completely forgot the fact that the mark allows her to lucid dream. Although it was a once off (plot device) the ability is still potentially there. It can have absolutely no effect here in AM whatsoever, but I felt I should mention it lest something about it come up at some point.