A really good friend of mine is coming for dinner next week with some other friends. She is such a kind and thoughtful person, but has this horrible habit of, um, eating with her mouth open, and also tends to pick her nose
All of dp's family have appaling manners, they can't and wont use cutlery properly, eat with their mouths open and are generally piggish.
It is one of my pet hates and makes me feel physically sick so can't sit anywhere near them when i eat, i just pointedly remind my dd's to use their manners and eat nicely but the inlaws don't seem to pick up on it.
Everyone in my family jokes about it, infact when my mums dog was slapping her chops and eating something loudly my grandad commented that even the dog can eat quieter than my fil!
Im afraid i don't have any suggestions other than sitting so you don't have to look at her