If I'm an court with my lawyer and the opposing lawyer asks my lawyer, why don't he come and work for him and they exchange numbers, is this legal?

It's my grand daughter, she let Ohio to return to Fl. to get her car in which her son's uncle had fixed it for her. She decided to stay there a couple of weeks to take her 2 boys to the zoo and some other places, so she got a job and the youngest son's grandmother was watching him while she was at work, when she went back to get him, his dad was over there and wouldn't let her have him. He grabbed her by the hair and she scratched him on the neck, she called the police, they made her leave the son with the grandmother, so she hired a lawyer and at their first hearing the opposing lawyer asked her lawyer to come and work for him, and they exchanged numbers. She's having a hard time now trying to get in touch with her lawyer and finding out what's going on with the case and I just wonder should drop him and find someone else to represent her?