This girl still has severe impairment of kidney function, as well as hearing loss as side effects of her chemotherapy. Can these side effects be healed with further Protocol work?

There are inroads that can be made here. The usual constraints apply in the belief quotient and level of belief within the self, that healing is possible, and one is worthy. You will have somewhat of an uphill battle with this because of the intervention of the doctors and their pronouncements, and the low expectations of the patient and family believing their assessments, that what is done is done. Nonetheless, the attempt is well worthwhile because there is always the possibility you are surmounting the local constraints if there is a karmic realignment sufficient to the task. There is certainly a desire there on all sides for her continued improvement and being able to live as normal a life as possible, and that is a big plus here that can be built on.