I need to provide a family member with spending money. They're developmentally disabled, so carrying cash isn't something they can really handle -- they easily misplace it.

Because of her intellectual disability, I have a special kind of checking account set up for her, and it doesn't allow for her to have a debit card. (I am her legal guardian since her parents have died.)

I'd like a pre-paid debit card or visa card that I can load up with $50 for her every other week for shopping trips she takes with a helper. I don't want to pay $5 every time I load it/she uses it/whatever.

Any ideas?

Cash won't really work. She can't connect a debit card to her checking account. She can't write checks. I really need something of a stop in place that won't allow her to overspend at checkout.

I can't decide if I'm overthinking this or if there really is a clever hack. If anyone on the Internet knows though, they're in this sub!