The protocol is is generally give them a couple of chances, if they then seem like they're avoiding it, ban without warning. She has been warned, note the URL in the ban message. If she doesn't note it down, it's her fault.
Edit - if worst comes to worst, she knows she can't avoid it forever, players can be banned without needing to be online, if necessary...
Edit - if worst comes to worst, she knows she can't avoid it forever, players can be banned without needing to be online, if necessary...