Maybe hit some kind of middle ground? Like, some odd effects from runes that people don't normally expect. The Witch has been using them to imbue elemental power into weapons and armor -- attacks and defense and magic flashlights. The potential, however, is infinite. An example, carve a rune on a tree and activate it to sense the surrounding area, as far as that tree's roots stretch. Draw a rune on your palm with the intention of being able to read the mind of anyone you touch, or to turn whatever you touch into gold. Or maybe her intentions have an odd way of coming about, like the old trope [i]careful what you wish for[/i].