She's still a hero at heart and joined Magneto's team to keep an eye on him, and killed him when she felt his scheming went too far. So she was fine taking out another mutant if need be to protect the people. Plus that glorious issue of her hero'ing around by herself taking out the Nasty Boys and a Sentinel factory-thingy.
She also fought X-Man alongside the squad to save the world.
I'm interested in seeing her deal with her new body and everyone calling her "Psylocke" still. Maybe she'll offer the name to Kwannon.
EDIT: Have Betsy and Erik been face to face since that battle? I'm not sure but I'd love even a quick side-eye from Erik and a smirk from her.