Do we know if Kwannon has the telekinesis? All we've seen so far is the psychic knife/telepathy, right?
That said, the implication people seem to be going with is that after Revanche died her soul went back to her original body and has been hiding there the entire time, even when the body was recreated specifically for Betsy by her brother. So she'd remember the stuff with Sabretooth and, ideally, still hold a grudge.