Willow's eyes widened at the crystal, her gaze flickering back to him at his question. "Um, six? Going on seven. Though Giles always said I wasn't more the exception than the actual rule." Her smile was a little sheepish as she admitted, "My first spell was to re-ensoul a vampire. Tricky stuff. But then I started really learning with levitation, a few glamors. You know, basic stuff."
Her brow furrowed a bit as she added thoughtfully, "I actually got telepathy down a lot faster than teleportation, though. Maybe I did it backwards? It's not like I really had a teacher. Huh." With a shrug that all but screamed 'oh well', her smile returned.
"That's a pretty nice crystal you have there. I'm guessing it's something special, or do you just show it to all the gals you chat up about magic?" she asked playfully.