My mother,brother and my ex are like this
I used to dread her coming over,as in the ten minutes a week she'd be in my house,something would either get broken or stolen
I remember dd making a picture out of beads (I seem to remember you had to iron them to glue them together) and shed spent ages making it
As soon as my mother walked in,the beads went flying
No sorry,just 'you shouldn't have had them on the table'
She broke my phone,ripped 3 handbags,broke the heel of my shoe,ripped my bedding,poured bleach into my washing machine and pulled down my curtain rail
She'd walk in and if something took her fancy,she'd take it-chocolates,sweets,cleaning products,fabric conditioner and my shampoo where firm favourites
If I confronted her,the tears would start and then the smear campaign would kick in-she just had to get her story out there first-I'd see that smirk as I found the damage
My brother would go as far as to tamper with the brakes on the kids bikes-twice (I know it was him,I just can't prove it-hes the golden child and i was nc with him at the time,im sure it was him that broke into my shed)
He also broke the tv,free view box (twice), poured herbal tea over my new dress (knowing I'd saved ages to buy it),smashed a window (I had just nipped inside,leaving him outside with my mother and the glass just shattered apparently),ditto my garden table and stole the kids pet rabbit with hutch
My ex was a twat
He didn't want us to break up as he was losing control
Anyway,I'd saved up for ages to buy a cross stitch of a victorian girl putting a letter in a letter box
9 months later,I was about 10 stitches of finishing it and was so proud of my hard work
I saw him pour a pint mug of strong black coffee over it
He then tried to gaslight me by saying it wasn't his coffee,It was mine
I hate coffee-I've never liked it
He also stubbed out cigarettes on my (cheap but mine) new carpet,melted my bin, tried to break my (second hand but new to me sofa) and he sprayed strong hold hairspray down the back of my tv and tried to blame the kids (one was 18 months old and the other a newborn-eldest couldnt reach the bloody hairspray)
Loads more from all 3 but they are all acting on narcissistic spite
I'll guarantee its the same for your mil