Irritated

Sorry, this is a griping and complaining sort of blog entry. Pretty whiny, all things considered.
But I'm annoyed.
At, you might guess DH, but no, The Nan.
She called tonight, around 5:30. I hesitated to answer the phone, as I always do when I see her name pop up. I know it's mean, but it almost always means she wants something from DH. Something time-consuming, mostly. But I talked myself into answering it for a couple of reasons. One, she lives with DH's mom and dad, so when the name pops up, it's not always her (although usually it is) and I really don't mind having a chat with his mom. Two, I have to keep reminding myself that she is old, and she can't help that her mind is "going", and karma can be a bitch if I don't remember this.
Why, oh why did I not listen to my instincts this time? I knew that she had only just called last week to ask how we were all doing. So she had to have been calling because she wanted something. It was too soon for another, "How are you?" call.
She simply asked me if DH was home (not yet) and to call her when he was. I really should have "forgotten" to pass the message on.
Turns out, she wanted him to drive to Richmond Hill where they live to go car shopping! WTF? She wants to go NOW, because some Ford promotion ends tonight.
Really? She couldn't have called several weeks ago to ask him when a good time would be? She had to wait until the last minute, of the last day of the promotion? And, incidentally, what promotion ends on a Tuesday?? Or, the 14th of the month?
And why does HE have to go? We all know how pig-headed and stubborn she is, it's not like she's going to listen to anything he says! She could easily have dragged out DH's dad and not listened to his advice instead. He does live with her, and wouldn't have to drive for an hour to get there.
He had just got home from work, plus he had cut the grass, and wolfed down his dinner. The boys got to see their dad for about 10 minutes as he inhaled his meal.
I SO hate this! This....this....power, I guess, that she has over him. Well, that his whole family seems to have over him. He is at her beck and call. What is with that? Why couldn't he have just told her no, I'm sorry, I'm busy? To call and expect him to jump and run immediately there is unbelievable! And unfair! She is so irritating!!