The Doctor's Again

In keeping with his recent theme of telling me what to do, my father felt the need to get me up today. I had gotten up early and gone out for a walk with Jennifer, and then went back to bed. I was planning on going down to see my Grandma and take her to the doctor's. I was annoyed that my father felt the need to wake me up because I know what the plan was and was going to get myself up. Also, I set my alarm, because, you know, I planned ahead.
When we got to see my Grandma, he was a pain in the ass. We found her outside her room, working at her beloved puzzle. We had to make sure she went to the bathroom and change her clothing and then get her into the car and then drive to the Doctor's office. With a normal person, this would be easy, but my Grandma is stubborn, can't move well, is slow, and needs lots of help. Because she wasn't in her room and takes ten minutes to waddle to what for most people would be a two minute trip, I was trying to be conscientious of time and not waste any of it. I asked my Dad to walk back to the room and get something.
"Don't tell me what to do," he said.
I almost burst at him right there. I'm so sick of listening to him, I'm so sick of hearing him. Every time I do anything in front of him, he takes it as an opportunity to tell me what to do. And not in a helpful way. In a patronizing, annoying, nosy, rude way. I'm so sick of listening to him. I'm so sick of him being completely unhelpful and then having the gall to make it about me telling him what to to do. He hasn't done anything to help Grandma since she came back from rehab, and he was more concerned with whether or not he was going to go get something a two minute walk away to conserve time and prevent an old lady from getting winded. God. I can't believe him.
I texted my Mom, telling her that how much I hated dealing with her "asshole husband."
Luckily, he made himself scarce. That's what he does when he doesn't want to do something at home: he disappears. He figures someone else will do it, and sadly, that's often the case. So I did everything myself.
My Grandma was being particularly stubborn. She weighs at least twice what I do, so I can't make her do things. She first gave me a hard time about the bathroom. Then about going to the doctor, whining the entire time about it. Then she wouldn't change into proper clothes.
Finally we got her ready. And then we drove to the Doctor's.
My Grandma has this thing where she will look at things as we drive past and make the same couple of comments. Usually, she notes how small the windows on people's houses are and how big the trees are.
For some reason, my father decided to talk to her about where we were going, asking her if she knew the way. Friday, she didn't even recognize her own daughter, so this was a stupid, and, as far as he was concerned, a rhetoric question. My Grandma always said she didn't know where we were going, as she always answers. After my father said something about it the third time, I was really annoyed about it, because it seems like a vicious way of causing her undue stress. She gets upset when these things happen. If it's necessary to ask her a question like that, sure. But if you already (apparently) know the answer and continue to badger her, then you're just being a jerk.
I'm so embarrassed by what a terrible human being my father is.