You could try to get the custody order modified. Of course, there is a fundamental question. Was this charge from 10 years ago when he was 19 and the girl was 16 or 17? Or is it recent and the man is clearly an adult and was acting as a pedophile. If the former, you probably won't have much luck. With the latter you may. Talk with a local attorney about the issue.
Answered on Jan 17th, 2014 at 2:43 PM