Ok I'm fairly new to MN but am prepared for the truth.
Yesterday there was a family party with family (which is large) and hosts friends. Most of family sat in lounge and rest went to dining room etc. Sat chatting and me and aunt both began laughing that we needed the loo but daren't move as we may lose our seats!. About 2 minutes later DS ran in from garden saying he needed loo and went upstairs. After about a minute I thought I'd better go and see he was ok and go myself. My cousin next to me joked he would save my seat by putting his feet up.
When upstairs I knocked on bathroom door and asked DS if he was ok. My sister opened the door and snapped at me he was fine as she was helping him. OK he's 5 and can go alone but I didn't say a word. Next DS gets it out starts to go when my sister asks him a question. Of course he turns round to answer and it goes everywhere. She shouted at him 'look what you've just done your not even looking at what you are doing'. DS finishes and comes out of tiolet straight away and gives me a hug and actually looked quite worried. I said to him have you forgotten something and he replied ' oh yes wash my hands'. At the same time sister opens door and snaps at him ' you haven't even washed your hands and you should be doing this' indicating at the tissue shes using to wipe the seat.
Ds looks worrying at me agin but I just tell him to go and play in garedn.
Fastforward 5 minutes I've been and go downstairs. My sister is sat on the poffy I was on. She was going early as had another function to attend and I knew she was going in a few minutes. I joked to my cousin ' well your chair saving skills are rubbish'. My sister knew nothing of this conversation but asked what I meant. Laughing I said Cousin was going to save seat for me but it was only a laugh and anyway as she was leaviung in a bit I would sit down then, no problem'. People chatted and after about 2 minutes I said ' actually I think I could prob perch on edge here if you don't mind moving across a bit.
Whoops she just looked at me and said why should she share and no she would not. My mum then began making comments like going then girls share I dare you etc. I just stood there shocked and mortified feeling like a kid. My sister was adament she was not going to shar.
DS then comes in from garden is a bit tired and asks for a hug. I give him one. He asks to sit on my lap and I say when I sit down of course he can and to play for a bit. Ds points to room on poffy and says can't you sit there, Sister says no shes not sharing and DS tells her she should share as theres room. Sis says no but he can sit with her. He says why doesn't mummy sit with her and him on my lap and we can all share. (Bless!!). Sister says no and tells him apologise for being rude to her. DS looks at me upset so I suggest he goes and plays again for a bit.
My sister than says if he doesn't apologise she won't go to his class assembly next week. (I can't go as I am working).
DS looks at me I tell him and go play and doorbell goes which is taxi for sister and she leaves.
Sorry it;s so long but I wanted to know AIBU not to make him apologise (Iwould if I thought he was being rude) and/or is my SIS BU to make such a threat?