She died at the emergency vet about an hour ago. She started twitching and flipped over. Vet had very little to offer, basically said that's what alot of snakes do right before they die there.

I can not express how heartbroken I am and I can not explain my behavior. I got medication in one snake, not the other and simply failed to act in time. I want badly to delete this whole thread, but I also want to leave it in case some other new snake owner finds their way to the search bar with the same symptoms. I just did not respond with the amount of concern that was justified. I never would have behaved this way with any of my other pets. I just took her casual behavior to mean I had some time, until it was obvious I didn't anymore. I just made all the wrong choices.

Blackie was one half of a pair of snakes that had spent their whole life together, and truly, truly enjoyed each other. I fell in love with them and now I need help caring for her buddy. None of this is fair to him/her and I think the only direction I can go with my devastation is to work harder to be an incredible snake parent for Stripes. So instead of deleting this, tucking my tail and hiding, I have more questions.

Will Stripes grieve too? What's comfort to a lonely snake?
Can Stripes get a new buddy, in time? Was growing up with a friend the only chance he had? Is there an age limit to introducing a new friend, or other major considerations?
Should I get a necropsy of Blackie, for Stripes's sake? I have the cryptosporidium test, so I'll be doing that either way.
Both vets thought Stripes was a girl, but I caught Stripes and Blackie attached (copulating) this spring. How do I confirm Stripe's gender for certain, should I confirm Blackie's through necropsy? Can either gender of garter snake have a companion of the same gender? Are males too territorial?
Is it possible that Blackie had a miscarriage? Any one seen that before?
Is there anything else I need to act on to make things better for Stripes?

Sorry to keep using the forum as my crutch, I just have never had a non-age related death like this with any of my pets, and I'm just feeling a little lost.