"Thank you. I didn't want to change anything, just help you. Thank you for getting in touch again. Thank you so much, I can sleep again. You two are the most important thing for us"
Then why did she change things? It's BS. It's so BS it's makes no sense*. It was in her power NOT to change things, but she chose to change them.
*My fave Judge Judy quote: "That makes no sense. And if something makes no sense to me, it's usually because IT. IS. NOT. TRUE."
Oh, & bringing a photo of herself & your DH to your house & putting it in pride of place was helping you, was it?
-
This message from MIL riles me, as someone who's had several narc's in her life. Some of us narc survivors used to parse letters, emails, etc for each other - this is my go at MIL's text:
Thank you.
This is all about me. Thank you for replying. I don't care what you said & I'm not going to do what you ask. Just focus on me & we'll be fine.
I didn't want to change anything,
Nothing is my fault.
just help you.
'Help' is whatever I say it is. I define your world to suit my purposes. If I redefine my interference & PA damage as 'help', that makes me the good guy & you can't say anything without hurting me & looking like the bad guy, giving me the excuse to cry hot, bitter tears of anguish & go running to my brothers making drama drama drama - delicious! I win, either way! Say nothing & be under my thumb, squirming, or protest & I go off like a rocket.
Thank you for getting in touch again. Thank you so much, I can sleep again.
(Slaps back of hand to forehead, sinks slowly to the floor.) SEE WHAT YOU DID TO ME? You ignored my goading texts, you heartles, heartless woman! Isn't it enough that you stole my son? You plunged a knife into my heart - must you twist it as well by not telling me how angry you are? Was all my effort moving that chair for nothing? And the picture - don't tell me you haven't even noticed the picture! That was a masterstroke, though I say it myself.
You two are the most important thing for us
So I'm allowed to do & say whatever I want, forevermore. You will never escape me MWAHAHAHAHA!
NB Nowhere does she actually address what OP wrote to her:
"You are welcome here, but please don't tidy up anything or move or furniture around while you are here, we have asked you many times not to clean or move things around in our house. When you ignore it, it crosses a line and shows a total disregard for our feelings and opinion. You know this. It causes unnecessary stress and our house is the way we like it. The fact that you've sent me multiple messages to check if I'm "angry" shows that you know you've overstepped the mark. I am not angry. We know you mean well. But you need to stop this."
What might an apology look like? Something like this:
Dear DIL, Thank you for explaining to me. I now understand why things I've done have upset you. I'm truly sorry that I upset you & now that I understand, I won't do those things again.
Ha! Fat chance with a narc.