I don't do FED softball, but I do FED football and basketball in Nebraska, and one thing that's hammered into us as officials when ejecting a player is not to let them leave the confines of the field or gym without adult supervision. Someone challenged the state association, saying it's not our responsibility as officials to monitor this. The state association just said to make sure that some adult goes with them, and if we observe the lack thereof, to make a report to the state (or notation in the ejection report) and they would deal with the school for not having adult supervision. Some states do expect officials to observe this and report if necessary, so it could become the umpires' problem if "mandated" by state.