My mother drags her feet when she walks.

My mother is 90 years old. She still drives, goes to exercise, gets around very well. She stays in her own home and is pretty independent. Trying to look out for her, as I thought a daughter should, and not just assuming that because she is 90, that this is something that just happens. I suggested that she see a doctor. I believe in getting all help when needed, to make a happier life. My older, daughter who is a nurse and my younger daughter, who is an occupational therapist, also spoke with her about dragging her feet. She gets angry with us for telling her to pick her feet up and when we suggest that she sees a doctor. She says that I fuss at her. She says that we should be thankful that she can walk. I consider it a great blessing that she is able to walk and get around as well as she does. We thought we were showing love by looking out for her. We don't want her to fall. I tell her that the reason I am concerned about her dragging her feet is that I love her. Am I wrong in telling her to see a doctor. She seems to resent it . It hurts me that she is so angry and lashes out (especially at me) when all we are trying to do is look out for her well being. Has anyone had this issue? I appreciate any words of wisdom. Thank you