My 76 Year Old Mom Was Diagnosed Last Year With

My 76 year old mom was diagnosed last year with advanced Alzheimer’s. She is high functioning but has significant short term memory impairment. Today she was diagnosed with papillary serous adenocarcinoma following an endometrial biopsy. I have done some reading on recommended treatments but am curious how to proceed with both of these diseases at the same time. Her ability to handle stressful situations has diminished significantly. Where to begin.....overwhelmed in Oklahoma.