E.M.
My guess would be it's the meds. Have you consulted her Dr. on this? If not, please do so. If you have, please get a 2nd, or a 3rd, or a 4th opinion until you're able to pinpoint what's going on. I do agree with Rachel K. that you may want to talk to the pharmacist concerning the medication side effects/dosings. Praying she feels better soon!