Vegeta turned to the greeting, taking a moment to place her face, then a nod back to her. Her name... may had evaded him for right now, and there's a good chance he will need it to be told to him again, however he recognizes her as one of the train members. "Hello." And then recalls the incident he had last actively interacted with her during. It wasn't a case of he having avoided her, just even in the limited space, he hadn't really ran across her enough for them to speak again.

"It has. I presume you're doing well." Not to fully bring back the worry and stress she had about her powers getting away from her, but she appeared happy so Vegeta can only guess there had been no more repeats of that panic in regards to her powers.