@littlek,
OK, I'm gonna be blunt, k. I don't know if this will help, or whether you'll welcome this or not, but here goes ...
This "young one" you're sharing with doesn't want too many "old people" around & is inflexible about it ... & has also just published your home address on Facebook .... leading to (amongst other things!
) the possibly of yet
another young thing that you could be sharing with.
I think it's reasonable to say that she's pretty immature & rather selfish, yes? And that she's not considering
your druthers at all.
I know you loathe conflict, k, but ....
What are your feelings about living with
two young things, not just one? Because that is most likely what you're going to end up with, the way things are going.
Is there any way the two of you could have a fair & reasonable discussion about
your concerns & rights, assuming this is not what you want? Is there any realistic possibility of a compromise between what the two of you want?
If not, what happens next? (I know what
I'd do, as inconvenient & as upsetting as it might be ...)
Think about it, k. Time is running out.