I am assuming op you need to work, pensions, state and work need paying, bills paid etc.
Perhaps get your bills and sit down and show her what you have to pay and say, actually, whilst I love you being here I was actually thinking of starting to ask for small contribution to bills, not give up work.
Gently and kindly explain these things to her. If your adult child has no idea what bills are, what living costs... Blame yourself.
I can't understand posters who come out with the, chuck her out lazy bitch get into the the real world...
My dd is 12 for years I show her where we get the money to go out from, whose wage covers what. Mortgage, credit cards. How we save to do things, save slowly, and build up ££ to do nice things
She's very plugged into the money side of our household. Eg we have had sofa we hate for 5 years longer than could bare it, told dd I could buy one on credit but we are not going to. We will save for new one.
She's also got little bank book she's had for years, she doesn't really get Xmas or holiday money from relatives but I put in money every month, encourage save half, spend half and I've also got her playing on ocado app to do a food shop.
Because you can shop and watch it adding up without buying... To give an idea of that.
My own dm was a bit like some pp on here in that she never explained anything or showed me anything but would just nag about bills. Dc need to be taught these things which is why I'm laying ground work for dd!
Anyway op, sorry I went off piste there
just gently explain things to her.