Dd2 (13) had her purse in one lesson today, in her bag at the side of the classroom under a bench. In the next lesson, after lunch, one of her friendship group said she had found her bus pass type card in the previous lesson's classroom. Dd went to put it back in her purse and found it missing. She retraced her steps and checked at the office - nothing. On the way home she and another friend met the girl who found the bus pass who came running over saying she had found dd's purse on top of some lockers. Dd looked in it. It still contained a Next gift card which only had £1 on it. Her 'emergency' £5 and £5 another girl had paid her as sponsorship money for a cycle ride she did were missing together with an iTunes card which fortunately was empty.
Four pieces of coincidental info -
The girl who found the pass and purse was on a shopping trip with dd before Easter - which is when dd spent what was on the Next card.
The same girl had no money of her own on that occasion and dd bought her lunch in Mcdonalds.
The purse was a nice Cath kidston one dd bought with birthday money.
If I know dd she will have been very upset about this and she has big blue eyes and a very sweet nature. Bluntly she's the sort of person it's very hard to be mean to. She also possibly comes across as a soft touch.
I suspect that this girl has taken the purse and then felt bad about it. I don't really know what to do. I would never suggest this to school but tbh I think the circumstances are very suspicious and I am sure they would investigate. If this is the way this child - or any kid - is going then better they be stopped now BUT I also feel desperately sorry for them. Dd doesn't have an excessive amount of money but she has £40 a month to spend on herself plus occasional gifts from grandparents of aroud £10-20. Based on where dd mentioned meeting this girl today I think she probably lives in a less 'affluent' area. It's entirely possible she has very little money of her own. We are Christians and I know dd will have talked to her friends about that. I reckon she may well have thought that the money is no loss to dd and that we won't take it further. I can afford to replace the money for dd and she has got the ourse itself back.
Dh thinks we should tell school without drawing any conclusions at all and I see his point. I feel very protective of dd. However tbh I also feel protective of the child - whoever it was - who has been daft enough to steal like this. I guess I feel a bit guilty about having money that others don't even though we are by no stretch rich. We're ok from month to month though our savings are a joke 
So AIBU to do something? AIBU to do nothing? WWYD?