Anonymous wrote:What did your sister do to your niece?
I'd recommend cutting visits short. Go for the bday and leave, say you have other commitments. Don't spend the night.
OP here. It's a long, ongoing story with my niece. My niece is not my sister's biological child, and my sister despises my niece's mom. I don't think my sister can look at my niece without seeing her [my niece's] mother, whom she loathes. My niece is the target of insulting comments, heavy chores (way more than I think is appropriate for a girl her age)...just general nastiness. Basically every interaction my sister has with my niece is mean. The poor girl cannot do anything right in my sister's eyes. It's abuse, in my opinion.
We do try to cut the visits short. This past one we stayed only one night, which is very taxing for us because it means a 5-hour drive, staying over one night, and then turning around and making the 5-hour drive back. It's exhausting. We have sometimes stayed in a hotel halfway through the trip to break up the drive. My sister and BIL always get annoyed when we tell them that we're only staying one night ("what? what do you mean you're only staying one night? why do you have to leave on saturday? etc")
We have invited my niece up to stay with us, but my sis and BIL always say no because they say that her mom would never allow it (but I really think it's them who won't allow it). I really wish I knew my niece's mom. I have thought more than once about calling her but if it ever got back to my sister, she would disown me for life, definitely. She would never forgive me.