Bit of background- my sister has started to socialise with my friends and I over the last year or so. She never invites me anywhere, but gets very put out if I want to see my friends without her. We always have to go to places she likes, and she will sulk until we give in.
The situation at the moment, my friend and I started planning a night away in June about a month ago. Friend had just gotten out of a long term relationship, I'm tired and feeling rundown with DH on nights and toddler terror DD, so thought we could do with a little break :) we invited my sister, who said she would come.
Then we found out she had booked a week in Greece, flying out on the day we had arranged to go. She then said that we should rearrange our night away for the day before.
I can't do this due to childcare etc, i told her this, so friend and I have booked the hotel for the original night.
Sister is now not speaking to me.
Have I been unreasonable? Should she have everything her way?