Thanks for all your replies! We took her to the vet, about 45 minutes away, and they worked tirelessly for about an hour to get the kid out. I was very impressed with how hard they worked on her. The baby's head was stuck facing down and they had a VERY hard time getting it out. The kid didn't make it, which is what we were expecting, but Mom seems fine and is back home now with her surviving kid, who is big and healthy and doing great. The vet says the baby probably died a few days ago in utero, and we're lucky that the live baby came out first and did fine. I'm very glad we went to the vet, because there is absolutely nothing we could have done on our own without their skill levels.
Sorry about the twin. Sounds like the other one was very lucky.Glad your doe didn't have to have a CSection! Glad she's OK and congrats on the new baby.
So sorry about the kid but very glad mom and baby #1 are okay. Sounds like you made a wise decision to go to a vet. Having a vet available for times like this is priceless. So can we see pictures of you sweethearts?