I'm sorry for your loss: I would highly recommend a necropsy. Since she was paired and in direct contact with one snake and not really QT'd from your other 70 snakes I think it's a MUST to find out why she passed and if she had a illness/disease that all your other snakes could have now. Snakes need to be put in the fridge, not the freezer, for a necro. Some vets will also allow you to overnight the body to their office if you cannot drive so that may be an option too. Good luck: I hope for your other snakes' sake this was an isolated incident.