Right now, it's my MIL.
Two weekends ago, DD and I went to a pumpkin patch. We each got a beach ball sized pumpkin (mine was a little bit bigger). This past weekend, MIL picked up DD to spend the day with her. I asked her (MIL) if she wanted to take DD's pumpkin with them to carve it. I ensured to say this out of DD's earshot just in case MIL said no and let MIL know that DD didn't know I was suggesting it. MIL agreed.
When she dropped DD off with the pumpkin, it was gutted with a giant hole in the side. MIL had cut a huge opening in the side, gutted it, then put plastic cupcake toppers inside that said "Happy Halloween". She then wrote "Our Street Cemetery" above the opening. I was astounded that such a perfect pumpkin had been wasted as such, but I said nothing and my face belied nothing. DD, on the other hand...she's 7, I can't blame her.
"Momma, can we carve your pumpkin for real, like with a scary face instead of just a hole?"*
DD and I had a talk, later, about how stuff like that can make other people feel bad. MIL? She went PA on DD and I had to bean dip like mad to get her to knock it off. You don't pull that manipulative excrement on a child. This isn't the first time she's done it, either.
*We have a few stairs leading up to an enclosed porch, on which was sitting my pumpkin. DD only said this, I'm guessing, because she saw my unmolested pumpkin sitting there next to hers where MIL had just sat it.