Thank you all SO much for your responses.
Shoeskitty-- We did in fact give Chewy (our little one) Novolin N as well.
When we asked about home testing, we were told it was not necessary, just to bring her in every so often so they could check up on her. It's certainly not my vet's fault nor anyone's. It's just a devastating miscommunication.
We had her on a new diet and decided to help better regulate her (and hopefully achieve remission in the future) to go the insulin route because we didn't want to waste any precious time.
We had actually brought her to the vet about a year ago for blood work (tons of water intake and frequent urination), and we were told she was fine.. Only to find out from a family member who works at the practice, that her blood work came back possibly diabetic. So knowing it had already been over a year without regulation, we wanted to do right and again, not waste anymore time.
We'll be going to see her first thing tomorrow morning, and I'll keep you all updated. When my fiancé went in today, she wasn't fully conscious, but when he put his hand under her head, he said she was purring slightly. We left a worn shirt with her so she had comfort of having our scent with her.
The first thing I do before giving her insulin ever again is purchasing a meter and staying 150% on top of everything. I'm blessed to have found this forum, and it's incredible to know there are so many awesome parents who take their kitties' health so seriously.
All of your little ones are so lucky!
Are you on Facebook? There's a member on the FB Feline Diabetes page, Susan Olk Casella, who went through exactly this with her Baxter and she got him through and would like to talk with you ASAP!
Thank you all again from the bottom of my heart.