Maryland and Florida are both members of the Drivers License Compact (DLC) so the Florida courts will transfer your speeding ticket conviction information back your home state of Maryland's Motor Vehicle Administration.
The Maryland Driver's Manual section that describes the state's involvement in the DLC (pages 22 and 23) says that convictions reported from member states are treated in the same manner as if the offenses occurred in Maryland. Drivers who are convicted of traffic law violations when driving in another jurisdiction do not escape corrective action taken by this state. Convictions for moving violations received from other jurisdictions are recorded on the Maryland driving record.
The Maryland MVA website page that discusses violation points states that if you are convicted of a vehicle-related offense in a jurisdiction outside of Maryland, the MVA may assess points. So points may or may not be assigned but if they are, the point values identified in Maryland law for similar offenses determine the number of points that you will be assessed.
Speeding in excess of the posted speed limit by 10 miles an hour or more is 2 points and there is not a listing for speeding below 10 mph as you were ticketed for in Florida. From this information it would appear that points would not be assigned to your driving history for the Florida citation but you may have to contact the MVA to find out for certain. I know you said they were previously not of help but if you wish to call their customer service phone number is 1-800-950-1MVA(1682).