Ralts

*You are taking a peaceful walk in the city. As you walk throughout the city, you hear some noise from the alley up ahead. You turn into the alley and see at the end of it a trainer and another pokemon backed into a corner, you try and get a better look and manage to make it out, it's a small Ralts, and it looks scared. The trainer looks like they are trying to use the little Ralts as nothing more than Xp for his pokemon. What do you do?*