Medical signs and symptoms of phlebitis

Health Description
Health Consultation Description: My Mom has a red blotchy rash on her left leg from the foot to her hip. She has a fever, is pale, weak, and has no appetite. She's been sleeping almost the entire day which is very unlike her, even at 85. She adamantly refused to go to the emergency room to have this checked out. If not phlebitis, what could this be?
Yes, I now see that is probably cellulitis. My brother met me over at my mother's house just now, and she screamed at us to leave her alone. I tried for 20 minutes to persuade her, but my brother was being very passive and told her that we would check on her tomorrow (he's a liberal, what can I say). So to avoid causing her to have a heart attack from getting so angry at me, I decided to leave and pray that she will be willing to go in the morning. Thank you for your answers.