What a terrible scare! Glad to hear that your goos are doing fine now.
I would think that as long as there are no open wounds that Dora can go back into the cage. I've never had a goo with a tail issue before - but it's been several weeks so it should have healed by now, I'd think. You probably have already referred to them but there are several degu-specific forums where you can discuss this with degu owners who have shared similar experiences like degu world and degutopia – they would probably be in a better position to advise.
I would think that as long as there are no open wounds that Dora can go back into the cage. I've never had a goo with a tail issue before - but it's been several weeks so it should have healed by now, I'd think. You probably have already referred to them but there are several degu-specific forums where you can discuss this with degu owners who have shared similar experiences like degu world and degutopia – they would probably be in a better position to advise.