I agree with welbeck, so I'd be inclined to ignore any difficult behaviour - as far as possible. If she's sulky and refuses to sit at the table, I'd find that quite easy to ignore. It may be that she really needs to be there but just finds it impossible to join in. Show her understanding and affection rather than any nagging to conform.
What to do with immigrants? - ask Shakespeare
You’re the receptionist. What would you have done?
A super-quick, easy dinner for Gdcs when you’ve all been out all day and they’re ‘starving’….


