I don't take any of the Kreia being incapacitated effects seriously. She probably feigned them all. She was still capable of messing with Vrook's mind such that he couldn't notice or remember her. Visas incapacitating her also makes no sense. As I said, she probably faked it.
Also, Stasis Field? I only recall Vrook hurling the Exile's party into a rock wall with enough force to stun them long enough for him to escape.