I've written about this before and had my arse handed to me-i think I was meant to bend over and take it from both sides and mumsnet
Dp's dd needed somewhere to stay as her mother (who is a psychopath-I don't say that lightly about anyone,let alone another woman) had slung her out
The dd (then aged 17) moved in,stuck her nose in the air about the room she was given (id redecorated it and it had lovely new bedding and other bits,on my dime) and told me her rules for 'allowing' me to stay in her dad's house (we both own it but shed been told it was under her dad's name)
I had to up my hours at work to double what I was working (if there was no more hours,I had to get a second job)
I had to give her my wages as it was made clear she was only staying with us until she met and married her rich man,then she didn't want to know dp
She didn't want to work-and wasn't paying any rent
Her dad had to buy her anything and everything she wanted,while she spent my money on crap
If she needed a lift anywhere,we had to drop everything and take her,she would 'put up' with a pre-paid for taxi on the odd occasion (her boyfriend lived a £25+ trip away)
She wasn't prepared to clean up after herself and I had to do her laundry,as and when she wanted it doing
Loads more but you get the idea
I laughed her out of the house-it caused a lot of tension in our house as dp just wanted a quiet life and for everyone to get along,we ended up in counselling which made him see the light
Its a long story but she moved out (back to mummies and then uni-that gave her a shock) and went scorched earth on me because I refused her demands (including sending my nc narc family 'personal pictures' I'd sent to dp for his eyes only,stealing money I'd hidden away,smearing my reputation,lying about me,trying to cause trouble at my work so I'd get the sack and lying to dp to break us up)
Never again