Milt,
When he produced the first dive tables for the Royal Navy around WW1, Haldane found that there will be no bubble formation (the source of the "Bends") if the differential pressure ratio is less than two i.e. you can stay down at 2 ATM (32 feet) indefinitely without any effect. However if you had had an explosive decompression the sudden delta P could have given you problems.
John,
Did your Duchess qualify outside of the UK? When I left in 1980, the British Sub-Aqua Club was the main SCUBA training agency not "Put Another Dollar In".