My younger sister and me share the same birthday. Tomorrow night we are all going out with my older sister, mum, dad and my younger sister and her boyfriend to have an Indian. My mum told me that this is for both of our birthdays.
This morning my younger sister phoned me and told me that on the 19th of Jan she is having a party with her friends and for me to go as well. My older sister is going. I told her that I would let her know.
My husband is working a late shift on this date and my MIL has been invited out to eat on this date so can not look after the kids for me. (My kids are DS12 and DD9 so too young to be left on their own at night).
My older sister phoned and asked me if I was going to the party on the 19th and I told her I couldn't go as my husband was working late and MIL wasn't available on this date. She told me that I should make an effort as it is our sister's birthday and I told her that the main party was tomorrow as it is both of our birthdays on Tuesday.
I then phoned up my younger sister to explain to her I couldn't make the party on the 19th and my mum told me that she was on the phone to my older sister so my mum asked me if I wanted to leave her a message so I explained to my mum the situation of the 19th of January.
My mum started to get upset with me and shouted at me and then said to me "if you don't want to come then don't go". She then put the phone down on me.
Should I ring up my younger sister to explain or pull her aside tomorrow night and explain to her the situation? As I said tomorrow night is the main party for both of us.