Weekness and not able to eat and drink.

Hello, My mother aged about 80 years is not well from several days. I have consulted a nearby doctor. he examined her and told that there is water retention in her body that's why there is swelling in her legs and abdomen and prescribed these medicines (tab RTO, Tab orderm, tab oflox 200, tab falm, tab Lasix 40 mg) for 7 days. After taking these medicines she was quite well and swelling had also reduced. But now again from last 5 days minor swelling is there around her abdomen....excessive weakness is their. She was not able to sleep so the Doctor has prescribed a sleeping pill...but after two days it was not showing any effect and now She is not eating anything and neither taking water...from 2 days. Doctor is telling that her hemoglobin is low. But he hasn't prescribed anything. ...she is too weak so we could not take her to the hospital...please advice me what should I do