Wow! I can't begin to imagine the stress this is causing. What I would do is check with every Caribbean-based airline that runs service to PJIA. That list would include Air Caribs (may be able to get to Barbados), LIAT (may be able to find service to St. Vincent and the Grenadines, or even Grenada), or as mentioned above Winair (but I'm not sure where those flights go). I would think the number one priority is finding flight that will get you off St. Martin first, then try to make other arrangements wherever and whenever you land. Maybe from those islands you can get to a U.S. territory, and I would think those territories would still have connecting flights to the states.