"Tephramancers can... improve things about people," she says. "Particularly magical things. I can give a lithomancer better range, or let an ostimancer make more portals in a day. It's somewhat more difficult to improve actual skill, but it doesn't sound like that's relevant. If it's purely a quantity problem, then if I can learn to increase your magic at all, I don't expect it to be difficult or complicated to do once I figure it out."