Hmmm, maybe if he gains some levels he can put extra points in it and gain an advanced version of it that can restore limbs without horrible side effects.
Besides the whole issue with the catgirl's eyes, this is actually pretty well handled.
It has a pleasant amount of grimdark to it for looking so goofy on the surface... not to mention actual realistic depiction of an adult relationship.
But didn't we learn 3 chapters ago that magic is whatever you define it as????
Therefore just make an extra extra heal that restores lost limbs!!!!!
Author forgets what he writes 3 chapters earlyer kinda shit