Welcome! I look forward to seeing you over at the duck forum! I’m so sorry for your loss of Marge. I definitely recommend getting more ducks, although I’d definitely quarantine them before doing a slow intro with your drake. Maybe check with local farm stores to see if they know anyone who keeps ducks? Or, there’s always Craigslist!
I will say that learned the same lesson (don’t just keep 2 ducks) the hard way as well. I originally started with two (Daphne, my Rouen, and Margie, my Pekin) early last spring. My Pekin died after a very short illness and Daphne was inconsolable. My husband went out on an emergency duck hunt and got two Muscovy ducklings. We botched the intro and things were a bit rough for a bit, but everyone figured things out eventually and they are now a happy flock of 3.
How many ducks do you have room for? Would you have room for several “wives” for your drake?