torture

i've been home for about 24 hours after spending a week with my mom. don't get me wrong - it was a pretty good week. she drove me only a bit crazy, and that was only at the beginning. but i was looking forward to just having time to myself.

my brother phoned earlier and i asked him if he had seen my grandma yet today. he said no. i said that i was going and asked him whether he wanted to come with me. i told him i'd call him when i was ready to go.

flash forward to 10 minutes ago. my mom phones and asks if i'm going to see my grandma. i say yes. she asks when. i say after 6. she asks if she can come with me. i say sure. she asks if my brother is going. i say maybe. she asks if i was going to ask her if she wanted to come with me. i am surprised by how stupid she is for asking a question to which she's already decided what the answer is and stutter. she says, "no, you weren't. that's okay, that's okay. what time are you going?" and i know that when i pick her up, she's going to say something about not thinking or being thoughtful enough to ask her to go with me. why? why? why??

why does she do that to herself?