How can I persuade my mother to do something she must do without losing my patience? Raising my voice is not an option, though I want to.

My 79 year old mother fell 6 days ago. She landed on a lot of clothes. No injuries sustained. She did not hit her head or extremities. She stated, she was trying to wash and do other household duties, and was on her feet for a long time, and her left leg went out. She was in the basement for three days, not able to reach the phone but managed to crawl to it when it ranged on the 4th day. Help did arrive. She was dehydrated. Now, she is eating and drinking a lot of water. She is scheduled to see her doctor. She does not know that yet. She needs a bath, she is pissy. She is too tired to take a bath and I don't want to force her. People are calling her, including my brother asking if she bathed and she says no. I need to woman-up and demand she let me help her bathe. Since she is too tired to do it right now, I'm trying to respect how she is feeling and help her regain her strength. She says she feels much better. A relative and her friend, who rarely calls are asking if she bathed yet. I can imagine what they are thinking when she says no. My mother is VERY proud. It took a lot for her to admit she needed help around the house. Now, this bathing sht. They (rarely call people) are not calling, and asking me if I need help getting her to bathe, so I'm on my own. It will be 7 days without a bath tomorrow, but it's lottery day. I believe she will bathe because she wants to play her lottery. She wipes everyday after using the rest room. Please advise.