I’m sure they will find a way to explain it as a genius 5D chess move to “troll the libs”.

My understanding is that bipolar people are swinging between depression and a manic state. Also these state last usually several days. My mother has a bunch of other symptoms of NPD, not just that one.

My mother is very similar and I’m pretty sure she’s a narcissist. She could also switch between “Have fun at the playground my darling! I’ll have your favorite dinner ready when you come back!” to “Why did you come back?? I’m sick of you! Get lost and don’tcome back! Having children was the worst mistake of my life!” within an afternoon.

So no, it’s not normal.

She often overstepped the guests’ boundaries. For exampled she pressured Mariah Carey into drinking alcohol as a toast to “not being pregnant” in order to force her to admit she was pregnant. Carey later said she didn’t want to discuss her pregnancy due to a history of miscarriages. She also got really aggressive towards a guest for not having been invited to her birthday party. That’s just her on-camera behavior. There are numerous stories of her being an asshole to basically everyone behind the scenes.