Anonymous wrote:OP here. Mom works outside the home. Dad eats small portions of everything and I think does not eat much during the day. I am fully aware the behavior is sickening. I don't think neice is in any physical harm. He is fully functional all day long. After the drink, he does the weird dinner ritual and then goes upstairs to bed. I think if I refused to be a party to it I would get a lecture about not being a dutiful daughter (parents are immigrants from Asia) and a guilt trip about how dad is old and I should look after him better. The whole situation makes my blood boil.
Physical harm is just a part of the point, OP.
The fact that she's abitually around a drunk also exposes her to potential emotional abuse and it normalizes drinking.
Imagine your niece ten-15 years down the road, drunk as a lord. Or imagine her with a man who's in the habit of getting drunk daily. How does that feel? Not good, I imagine.