"Magicker?" Willow repeated, confusion causing her eyebrows to knit together. Ley lines. That sounded familiar. Trying to figure it out, it took her a few seconds before understanding dawned. "Oh! Uh, no. No... lines. No snazzy title either. I just perform magic."
Sighing a bit, since it was difficult to explain to someone who didn't really just get what she meant, she tried again.
"I can feel the energy that makes up everything. The air, the ground, you, me, everything. And I can make it do things, bend it to my will. It started with reciting spells and stuff, but it's kinda progressed a bit since then." That was really the best way she could explain it, but she wasn't sure it really made much sense.
Deciding the how she didn't wasn't as important as the fact that she could do it, she went on to add, "But, there are lots of others here who do magic differently. We have some that need wands and do spells in Latin, and others who don't really do spells but their magic just makes them stronger, or faster. It's a veritable smorgasbord of mystical stuff and kinda neat." Her smile returned as she bobbed her head a few times to emphasize just how 'neat' she was finding it.