people are just funny - "none so queer as folk" - my SIL came down when DD was 1 week old. They stayed in a hotel, but the last thing I wanted was them tidying my house, despite the fact that they offered. Doesn't make me mad, or bad, just alittle at the state of my house and the fact that DH wasn't helping.
Was I wrong in thinking it is the OP's SIL ? I really do think this makes a difference. My sisters know my tidying skills, and would jsut do the washing up, and I wouldn't care if they saw my knickers on the airer.... but I would care if it was my SIL.
Did OP's Brother invite her up? My DH invited his sister, despite me saying I didn't want her to come. It's not that I don't like her, I really do - I just didn't want anyone around.
I also refused to let lots of our friends handle the new baby. I only wanted people to handle her who were going to be a regualr part of her life. Not PFB - she is the 2nd born. just simply my choice. I would rather she develops close bonds and is used to being handled by regaular people than "strangers" - although I would never use that word to people's faces.