Yuki's abilities are beyond Anti-Spiral's and she wouldn't restrain herself to fighting on her opponent's level
That would make things worse for her in a sense
When Spirals (simons crew) see something way stronger they don't go "well **** were done"
They get pissed / get more resolve and get on its level to kick the **** out of it.
Thats why Anti Spiral used the "fight on their level" method.
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XBL GT: Demon Ninja X2
"There comes a time in every man's or woman's life where they have to make **** up to cover their ass." - Hazama