I am not going to rag you about the culling factor, sheep and goats are livestock to a lot of people and you don't keep around old unproductive animals, you can't. Sorry folks that is life on a farm.
But, when you could reach inside the uterous and feel live lambs, the cervix was fully open for you to get a hand in. She wasn't trying to push (probably to old and tired to contract or push anymore), but anyway if you can get your hand in pull the lambs (or kids) or if she is pushing, untangle them and let her try for a few minutes.
I am sorry for your loss.