She still needs an external trigger to use mystery (getting hit first in her case). Exactly the same as AGK needs to start chase, water main needs to move, gengetsu needs to trigger 10hit standard, etc.
What I meant there's not a single ninja in the game that c*e prompt mystery r1 that starts chase sequence other than just high combo RIGHT AWAY on entering the battlefield without any additional conditions. There are plenty of ninjas that c*e such prompt r1 when some additional conditions are met, but not a single one that doesnt require anything to happen beforehand.
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