My FMIL strikes again!! AND AGAIN!! Please help!!

She is literally certifiable!! WE asked her one simple f'n favor and now it is like we asked her to climb Mt Everest.
We told her to come over while the painters are here. She asked for a set of keys...I replied, 'He will be here when you get here.'
Once again she wants a set of keys to lock up. I said, 'I will be home before you leave.'
Third and final time she asks for a set of keys she says, 'Why can't I have a set of keys? Do you hate me?'

Last time I lent FMIL my set of keys it was gone for 2 months. I had to buzz neighbors to get in and sit in the hall for an hour. Or take a cab all the way to bayville for keys.

Is getting married really worth this?? I think I would be happier as a hermit and not having to her anymore!!





UPDATED: So the woman send me an IM, she tells me to add FBIL to my buddy's. I explain he is on my list but he is not on. She continues by asking me what my SN is. At this point I got snippy!! I replied, 'YOU AIM'ed ME'.
She tells me I have an attitude problem. Well, duh...you ask a stupid question you are gonna get a snippy answer.
Again she asks me, this time i type it out in caps for her. She tells me again to add him to my list. I of course say, I already did.
Not to mention this is the 2nd time today she tried to play me for a fool. Sorry sista, not happening!!!
So I show FH the IM and he says that I started it. BS, I am sick and tired of these certifiable morons and I refuse to speak to any of them anymore...including FH, until he snaps out of his dilusion!! Screw them, I don't need this crap. I would much rather be alone and be a hermit. VENT OVER!! PFFFT