Legal Question in Family Law in Florida

Petition the Court for a temporary restraining order. Would not take long.

While you don't have to pursue a divorce to have a court determine "custody', if the marriage is over, it would make much more financial sense to do so. Time-sharing would be part of the divorce case. Either way, if this is an emergency situation where the child is endangered, the Court may make the decision right away (within a few days). If it isn't an emergency, it might take several months before the judge would be willing to have it heard.

Pick up the phone and call an experienced family law attorney.

File a petition for custody and to prevent her from leaving asap.