Just to preface this, my partner warned me/talked about his mother's difficult personality and abuse on many occasions before. She's always been sweet with me so this was the first time I had a glance at that ugly side of her.
We are spending Christmas with my partner's parents this year. We planned that we'd go to their house on Christmas Eve, stay over and come back on Boxing Day.
Today we received a call from my partner's mother. She tells us that we need to be at my partner's sister's house at 10am on Christmas Eve as they were going to leave home early and the sister wanted us to see his niece open her gifts. It is over an hour journey so we'd need to wake up at 8am to get ready and leave. We were a bit taken aback as the mother already confirmed we'd come with the sister without checking with us first, also didn't like having to wake up that early as we both had such busy time at work recently and also are back to work straight after Christmas. So we said that we could get there for 11am as we wanted that extra hour of sleep.
She started getting so upset saying things like 'Go to bed early so you can wake up early for god's sake!!', 'I told her you'd come. It's important for her so it's important for me!!!' I told her to ask them to leave 1 hour later if they wanted to see us (they didn't have a time sensitive plan) and she told me to 'shut up'. At the end she played the whole thing as a light hearted joke but she was very demanding and borderline shouting at times... We settled on going there at 11am but I'm quite upset with the whole thing.
Were we being unreasonable here?