vash and ren have their arguments but he really cares about the little jerk and will, in turn, care about her too i think! he a habit of collecting unwanted people lmao. i think the powder monkey spot is held right now BUT she is more than welcome to come on missions with them whenever she's able to, or we can see what happens down the track and if something develops ic for her to find a role onboard as that could be lots of fun!