The last time she had one was March 20 this year. She is over eating and causing falling over. She wee herself all time my house stinks and my daughter got new baby . She where's them pads up stairs for day . Never get to ourself she goes out two how's a week
You might discuss with her doctor, if she has one. He may be able to diagnose her with his own tests and the information you provide him about her behavior.
Unless you can get this situation corrected with your Mom-in-law, or she eventually learns to wear Depends or something similar, I wouldn't want a baby crawling around on the floor.
As for bathing, many elders become afraid of falling in the tub and shower, as it becomes a scary place to easily to fall. Is the tub/shower set up with grab bars and rubber mats on the base which make the footing easier? In between times, you Mom-in-law might like using Huggies All Natural wipes... I like them for those times when I need to go someplace the last minute and don't have time for a shower.