If I'm following this properly, the child had a bus pass, £5 for emergencies, plus another £5 which was sponsorship money that might have been given that day, £1 on a Next card and nothing on an iTunes card.
Hardly what I'd call a prime mugging target, even if I thought it was okay to steal stuff off people I nastily considered had more money than sense.
And she had a pretty purse. I didn't know how much Cath Kidston purses were so I had a quick Google and found £11 to £25.
I'd probably give her a purse for under £5 and reluctantly warn her that envious eyes covet nice things and to keep it for best - whatever best is if you can't even take a purse out with you. We're not talking about something made by Hermes out of unicorn skin.
And she put it in a place where it seems all the other children put their bags. Maybe that's a school rule. Maybe she's naive. She is a child. It's allowed.
When I was 18 and on my first holiday without my parents, I left my passport and return ticket in my suitcase. My money and travellers' cheques were cunningly hidden in a sock under the bed
. Luckily, the maids were honest.
But if they have been pinched I wouldn't have liked to have posted on here asking for much sympathy. And I wouldn't mind betting you've all done some similar daft things.
I'd be telling her to keep valuables on her in a zip pocket. pumpkin's suggestion of a blazer pocket is a good idea.
You do sometimes put your jacket on the back of a chair. I've had a thief try to sneakily slide my coat off my chair. Luckily I was deliberately sitting on it. But then I am an adult.
A pocket sewn inside her skirt is probably a good idea because a bum-bag might contravene uniform policy and worse, make you look irretrievably nerdy.
However, I'm sure OP has thought of all those things. She was just asking how she should deal with her daughter's friend, who is quite possibly a thief, which isn't nice for her daughter and also might get the friend into big trouble one day. Which as dranksangria said, is more Christian than I'd be feeling about her.
People are now trying to justify themselves for being a bit shitty, aren't they?