So is it just me or is this odd....

My MIL has been watching our boy twice a week since I've gone back to work. He gets dropped off around 8 and I pick him up around 6. We bring him there in his jammies because it's early for him and I send a few outfits for him every time. I know she knows there are clothes in his bag because a couple times he's had blowouts and she's changes his clothes but most of the time she leaves him in his jams all day...I mean he drools he spits up sometimes and she doesn't change his clothes. Today he must have spit up becauae the front of his jams were literally crusty and he smelled like milk. She's not my favorite person in the world but we get along fine and her watching him saves us a shit ton of money. I know she means we'll but....what in the F.