bluerinse first of all well done you for taking on a 16 year old girl, it's not something I would want to do. I was an awful teenager, in later life my mother loved to recount how I contradicted everybody-and I did! So I have great admiration for you trying to cope but sympathy as well for your 16 year old GD who probably doesn't know why she behaves as she does. I'd say give her some space, her own room which she can decorate/accessorize and keep clean (resist the temptation to look in unless it's essential), perhaps arrange meals so she sometimes isn't eating with you, or even that she sometimes cooks for all of you. Is she OK at school? Sometimes teenagers bring their unhappiness in one area into a part of their lives they feel it's OK to show it. You could ask if she would like to bring friends to your house. It may be that she really doesn't realise how much is being done for her and that's why she doesn't help. Hope you can work things out, but I think with teenagers sometimes only "This too shall pass" is the solution.
Another Tired Kicking For The Sick And Disabled By Rishi
The Republic of Ireland and their tensions with migrants.