Terminal Cholangiocarcinoma - temperature has dropped

Hi all,

My sister was diagnised with cholagiocarconoma  nearly 12months ago. It is terminal (non resectable) . We have had chemo that worked at first but then caught an infection. Had a different chemo after that but couldnt finish it due to  pneumonia. Just got out of hospital after 3weeks fighting infection. Obviously she is weak and can only take soups &protein shakes and every now and then a little solids. I am worried bcus the day after we came out of hospital her temperature has dropped to 34.1. It has not been higher than 35.8 since we have been home. We have never had this (had a lot of high temp). Other observations are ok. Does anyone know if this is normal ??