Kylah, I understand exactly how you feel, sweetie. I've been there. First with the horses, then with the parrots, and again even with the very first glider I ever had, back when I was a teenager. That guilt is very hard to get over, because as a logical person, you know how it is. You know that you messed up. You made a mistake that cost you the life of one of your babies, and that is something that you can't easily forgive yourself for, if you ever really do.
I know this is how you are feeling, because I have felt the exact same way, and still do sometimes when I think about how decisions I made or didn't make but SHOULD have, cost me the life of an animal that was in my care.
I get it, hon. And I'm PMing you my phone number if you need someone to talk to that understands. You don't want to hear anyone's sympathies right now, and I get that, because I was the exact same way after losing an animal in this fashion. If anyone tried to tell me that it wasn't my fault, I wanted to smack them. Still do, actually. So, if you need to vent, you can call me, and vent. I will be out of pocket for the rest of the day until probably very late tonight (don't know how late is too late for you) but I would be able to talk to you tomorrow sometime for sure if you needed to talk.