Her only problem is she's instantly nerfed by even a single critical hit. If Biggs combo slams her she loses health speed and crit chance.
IMO her unique's buff removal process (whenever she's critically hit one is removed at random) should be altered to "whenever ahsoka is critically hit there is a (x)% chance to lose one of the buffs at random. Upgrades can also include reduction of (x). Zeta could be large removal of (x). Perhaps reduce the numbers a bit to compensate.