MIL babysat DD yesterday. Before she left, I showed her where the milk was in the freezer and where the clean bottles are.
She fed DD (an hour early, but that's a whole other issue) and when DD wouldn't eat, MIL decided that the nipple was too big (we just switched from preemie nipples to size 1, and she hasn't had an issue yet). So MIL went hunting for the preemie nipples... and she found a different looking bottle on my drying rack (NOT where I showed her the clean bottles were), so she took the top off a different bottle and put it on the Dr. Brown's bottle, without the inside tubing. Well, it turns out she took Marcnshaun's bottle that she'd left at my house. It was hand-washed (not sterilized), but it still irritates me that she didn't follow my directions. I know she meant well, but I specifically showed her where the bottles were... and because she decided to do something different, she ended up feeding DD with another baby's bottle.
I complained to DH, he called his mom and told her what she did. She called me to apologize and she sounded upset... should I feel bad? I didn't say anything to her at the time because I was sorta in shock and I also figured I'd let DH talk to his own mother. But now I feel like I made too big a deal of it.