User blog comment:KnocknickKnock/9 gates + master of the celestial realm/@comment-24066070-20131208182752/@comment-24066070-20131213195526

True, she doesn't need or use much plot armor. Still, I seem to remember (correct me if I'm wrong) she had to use Gemini in order to have enough magic to cast UM against Flare. Considering she had just received second origin, she should've had more magic power than when fighting Angel. That leads me to think the spell just worked against Angel because she had to be beaten and that the explanation/workings of UM were only established afterwards, which is OK, as long as it's not too far-fetched.

The bad thing is, that I can't easily re-read chaps at the moment to verify certain facts.