I blew it this morning. Mom, who has mid stage dementia, can not operate the microwave. This morning she was impatient and put cereal in and made a mess in the microwave. Not only that, I don't know what she pushed, but she locked the contol panel so I couldn't stop the thing. The fan was on full throttle! I found the manual but it didn't help. Of course, I knew she was upset that she caused the problem I kindly reminded her that I would gladly help her. She got defensive and angry. (Mind you the fan was still blaring in the background) She was yelling that she is my mother and even raised her hand to slap me. I raised my voice too and told her I will not tolerate her threatening me. Now, I regret even raising my voice, but it's too late. She is avoiding me, staying in her room. I will apologize. I just wish I could erase the scene. By the way, I unplugged the thing which seems to have reset the microwave, fixing the problem. What would you do now?