I'm almost certain that Trouble is a little girl. I've only had girls and I know from experience that you ca usually see balls within 4 or 5 weeks. Maybe you could get her a temporary cage? just until she old enough to be spayed so you don't have babies. Don't get rid of any rats if you can help it, I know it seems hard but maybe you could find a cheap cage on Craigslist for a little while?