[So maybe the cupid doesn't know what medical school is, or what sort of resources it requires. Even after the explanations from others that it has to do with healers (and not witches), the concept still isn't very clear. That seems not to matter much to the hotel, though. The wish is made, and the wish is granted. Ekaterina receives documentation for a bank account in her name, holding a rather large amount of money. Well into six figures, though it always seems to be shifting a bit. The documentation includes a checkbook and a debit card from a local bank. Local to wherever she finds herself. Even if she moves.
More than just that, the account seems to know what its purpose is. If she attempts to use the money for anything that isn't related to medical school, the check will bounce, the debit card charge will fail. It's only for medical school, and the necessary things related to it. Tuition, books, supplies. Even housing and other essentials, as long as she's in medical school. Outside of that, the account could just as well be empty.]