WTH!

I am just mad now! My dad walked all the way back to my mom's room to tell her he didn't think our getting a sitter was the answer! He said he wouldn't have any privacy....hell, he doesn't have any privacy now, and she told him that.I asked her if he had an answer, but , of course, he has no clue what this is doing to her. He is only thinking of himself. What it tells me is that he hears a lot more than we think he does. We never talked to him about a sitter, but we have discussed it while he is  in the room thinking he could not hear. His making a comment like that is going to make Mom even more reluctant to let us get a sitter a night. She is just exhausted and is just  not able to do all the things she has to do for him. Yesterday he was all cross ways on his bed and made no effort to right himself and while she was trying to move him around, she fell. Had to call brother to come get her up. Today he fell again. We don't know what he is doing when he falls. Mom thinks he is trying to move the potty chair, which she has told him to leave alone. I don't know what to do. I bought a baby monitor today and have been trying it out here at my home. Works great, so I will set it up there tomorrow. I just pray that he doesn't kill my mom, too!