Ferritin is considered an "acute-phase reactant" protein which means that any inflammation or tissue injury can cause it to go up. And when it's already high, it's not unusual to see big spikes from time to time.
Any illness, inflammation, the blood draw and even how they handle the blood specimen can cause it to rise. Doesn't mean there's more iron in the body.
At some point, I assume they will start the process to reduce the excess iron from her as a result of the transfusions.
I don't think you need to worry about transplant rejection based on the platelets (Thrombosit) counts. Sometimes, cell never fully recover to the normal range but are very livable. But you may want to post that question in the Transplant section of this forum where someone with more knowledge on on transplant can help.
Marlene, wife to John DX w/SAA April 2002, Stable partial remission; Treated with High Dose Cytoxan, Johns Hopkins, June 2002. Final phlebotomy 11/2016. As of January 2017, FE is 233, HGB 11.7, WBC 5.1/ANC 4.0, Plts 146K.