I suspect I'm not being unreasonable but I've just had to walk out of my mothers house 10 minutes after arriving for dinner with my newborn baby as my 17 yo sister told me to piss off and not come round again if I didn't like it.
This was in response to her winding the dog up and making it bark which on several occasions previously I've asked her not to do as I can't bear the noise.
My mother and her partner sat there and said nothing so I just got up and walked out and have now came home feeling very upset.
My sister has form for this type of attitude and made it clear I would not tolerate this once the baby was here as I don't want them being around that sort of behaviour.
AIBU? Hope that made sense!