She's not very good, but like everything else in Tekken, you need to know the match-up.
-With all of the moves where she's flipping around like an idiot (like d/f+3+4), they're very linear so you should be able to sidestep/sidewalk them easily.
-None of her launchers are safe -- you really need to know the appropriate punishes for things like u/f+3 (the hopkick), d/f+2, f,f+2 (her power crush), d+3+4, etc.. The latter two moves are launch punishable on block by everyone in the game.
-None of the backturned setups are advantageous on block so you should be challenging them. Just be aware that she has ways to crush both lows (BT d+3+4, BT d+3) and highs (BT 3+4) when backturned, so you may get mashed out on from time to time anyway.
-You do need to respect her range a bit -- don't go senselessly whiffing moves in space or you're going to end up eating hopkicks, 3,1, qcf+1,2, etc..
-You shouldn't need to worry about her lows much. f,f+4 is annoying but also has relatively little range and a lot of recovery on whiff.
