I always told my mom , We need to change you you are beginning to smell . Then I would get wipes , baby powder and new depends and walk her to the bathroom. I had to change her so it worked out perfectly! Good luck 😊
Have a medical professional check her meds and find a solution there. This of course, applies if mom is aggressive. If she is resistant, try not to pry and have her help, if cognitive. She may have a UTI?
Good luck 😊