With only 83k miles, your best bet is to search for cheap paid flights to Delhi, as that's probably not enough miles to get even one roundtrip at this point, though it's hard to know now since Delta doesn't reveal how much awards cost anymore. Also, you're looking for awards very late for an early December trip.

Try Kayak.com or ITA to see what flights are available. As far as a stop in Europe, if it's anything more than 23 hours, you'll probably have to pay a fair amount more.

Good luck, and welcome to FT.