My Mother Is 75 And Has COPD. She Has Been

My Mother is 75 and has COPD. She has been sick w/sinus/respiratory infection for over a month. Prescribed 2 different antibiotics and a steroid, plus 3 visits to dr. She can't seem to kick it and tires very easily. Tonight she had upset stomach after dinner. Three hours later she says her bones and head ache. Looks bad.
I am fighting a little bit of cold. Worried to she is going to really get sick.