My sil is nanny and one of her charges is my dd, three mornings a week. She changed her trousers one day and although I've said not to wash her stuff to prevent confusion (she looks after 7 kids, one around the same age) she did and left them at the house in a box where she keeps dd's stuff (unlabelled) ready for me to pick up on Monday. Meanwhile another parent changed his dd and got some clothes from that area. Trousers now missing. Ordinarily I'd be irritated but suck it up but the trousers were jeggings from Boots (good quality), cost £10, brand new and worn that day for the first time. I bought them to go with a blouse I'd bought and never even saw her in them. Anyway she has asked about them and the other family will have a check through their washing. I asked today and she said this woman had been working nine hours the previous day and trousers are not her priority. That's understandable but when I said to give it a few days I got a text back saying she understands I'm not being difficult but maybe I should dress her in old clothes in future to prevent anxiety over losing clothes and she doesn't get this off the other families, they have loads of money and leave her to buy their clothes anyway. She said that when people haven't seen their kids all day looking for clothes are not a priority. That is understandable but I feel like I'm being made to feel I'm being heartless. She offered to pay begrudgingly but I'm worried that will cause tension in the family. I'm just wondering aibu to think I don't want my child walking about in old worn clothes and I should have to foot the bill for clothes I haven't lost?