3093 from PVD to DCA cancelled tomorrow - only other availability through DCA is the 1:20 they suggested (also through DCA) to PBI at 8:00 pm
DCA has reopened but still has lots of cancellations - I myself have been trying to get out since Sunday and *hope* to do so tomorrow as well.
Other option includes early morning to CLT and then connect from there to PBI (Flts 815/1411). I would NOT push back a day to Wednesday as there's more snow inbound to DC tuesday afternoon/evening into wednesday. If you want to see her this week, I'd try for the early morning via CLT. (Added benefit of being a much bigger plane to CLT than the PVD/DCA segment)