"Oops! Sorry, Leigh. I'll try to get you back to your normal age, ok?"
Nariko placed a hand on the older Leigh and concentrated. After some time, the fire angel slowly deaged from her 22 year old self down to 15. Once the process was complete, however, Nariko slumped down to the ground, her once blond hair a dull gray and her eyes a muddy dark brown. Even her clothes morphed into a drab black and white Victorian-styled dress to reflect her loss of energy.
"Uuugh..... I do not feel particularly well, Leigh. Would you lend me a hand up, if you'd so please?...."
Apparently, her personality changed to be more polite and modest as well.
OoC: Nariko is just a battery, though. She can boost only for a short while, and once she runs out of power, she can't really do anything until she finds a source of electricity to feed on. Sorry for aging your character, though.