My sweet little DeDe duckling is the only duck I have but she seems fairly happy. At first we had two but then her freind got eaten by a raccoon with the head sitting outside in the morning. But now she is still happy and my little girl, or I hope she is a girl, but I was wondering, as she gets older will she see our geese couple and want another duck for a pair?
Ducks are social, and generally it's good to have more than one. At the same time, people who are able to do so successfully keep a single duck. But single ducks can become very sad if they are not with their person 24/7.
Ducks are flock animals and do best with others of their own kind, no matter how much dedication a human provides we cannot replace the behaviour nor language of another duck. If you do not want to breed, you can get her a girl friend and they'd be quite happy. Really depends on what you can accommodate.
I'd get her another friend for those times you can't be with her it will benefit her greatly. Hope you raccoon proofed so he doesn't come back for another kill.