Heh.
She gets her own laptop - gets coffee while it's booting - and: magical hacking! The easiest way to do this is just to abuse the shit out of divination. First, pick a target. Once you're familiar with how rich people do their security, you can select someone off a list of CEOs and such, but you can also divine for lists of accounts with low security and high value. Second means more up front work, first can mean more work later on. Ruby prefers 'finding a specific rich asshole' for aesthetic reasons and also because it's usually higher value per effort put in.
Then, figure out what your target's security looks like, plan a hard to trace trail, and start moving money. The low value easy way to do this is just getting an ATM to spit out cash up to the set limit, but that rarely nets more than a couple hundred to a couple thousand at a go. Good for pocket change during a trip, though, and probably the best for a first try?
The first magic lesson they should probably work on is getting divination to spit out letters, numbers, and symbols in a convenient format. Hers just makes images in a candle flame.