Actually, the fact that Taylor began glowing immediately after using a few motes while horsing around with Missy suggests that she is currently mote starved. She'd just gotten up after a full night of rest. Since personal essence pools fill first and using your personal essence doesn't make you glow unless you think it is dramatically appropriate to glow, glowing like that either means that 1). she glowed because she expected to glow, 2). she was pulling on her peripheral essence instead of a partially full personal pool, or 3). she pulled on her peripheral essence because she had no personal essence left. She then blew a lot of her remaining motes on an excellency and a presence charm. Hopefully a public unveiling will instantly give her Cult 2, because she's currently losing motes much faster in testing than she is getting them back via stunting.
Also, although I loved the chapter, I'd like to point out that a strict reading of Enemy-Castigating Solar Judgment means that it does nothing to anything that isn't a creature of darkness. Is there anything we should know about Glenn?