Bryan,
Rabies was telling me that her BT 1P was "godly" and how he'd mix it up between her kick flip mixup or OH mixup.
I believe both options can be stepped eitherway...
It's far from "godly". If it hits during a stun or on CH, it trip stuns, which is nice... but attacking during a stun is not Lisa's problem. Even Helena is good while the opponent is stunned.
If the opponent is not stunned, BT 1P gives Lisa a throw/attack mix-up. If the opponent slow escapes, the throw will connect as long as the opponent doesn't attack, but all attacks can be blocked. If the opponent doesn't slow escape, Lisa can use 6P or something similar, but it can be countered and a throw will whiff.
The kick flip is unsafe and inflicts minor damage. If I was defending against Lisa, I'd just attack with a fast mid every time she goes into BT (on block). You'll beat her out every single time. If you're stunned, Lisa's mix-ups are no different than any other character's, just don't mid/high counter and you won't eat that much damage.
BT 1P does track though.