My mom has this fixation she is constipated. I even write it on the calander "mom toilet" and write it on a note pad and show her and she agrees. But a few hours later says she hasn't had a bowel movement. She'll say I'm arguing with her. It happened yesterday morning again, she went and a few hours later says she hasn't. Anything else she forgets I remind her and she accepts it and brings it back to mind. But not this! She totaly blocks it out. What do I do?