Lisa,
I completely understand what you mean. I was beside my self when JuJu was admitted with DKA. I cried and cussed my self for 24hrs straight. How could I have allowed this to happen? I'm a terrible person! The doctors, techs, friends and family all told me not to beat myself up. There's no way I could've known he was that sick. DKA doesn't really present itself until it's already full blown and very serious. It can go south very quickly. So, I pulled myself together and started preparing for JuJu to come up. Through research is how I found this wonderful place, the FDMB.
Now, having been through DKA and having time to reflect, I feel like I missed some potential red flags. When kitty starts to look for an alternative water source (JuJu started drinking from a leaky bathtub faucet) that could be a sign of dehydration. I chalked it up to him just being a butthead. Now I know better. That's actually how we got him back on insulin just recently. My wife caught him drinking from the bathtub, immediately tested his BG (300) and got a ketone test asap. Thankfully, no ketones but we knew he had to see the vet immediately and resume insulin.
Probably the biggest red flag is sudden weight loss. That can be hard to tell because you see kitty everyday. I suggest, at minimum, weekly weight checks. The last figure I remeber reading is that kitty should not lose more than 2% of their body weight, weekly. And if kitty doesn't eat for 24hrs, it's a good reason to see the vet.
Sometimes things are out of our control but I certainly believe if we stay observant (we have to know what to look for), we can increase the chance of a positive outcome.
How is Tisha? I hope she has improved. Try not to get discouraged. JuJu had a couple days that he took a step back but then took two steps forward. It takes time for the treatment to work. Please let us know how she's doing.
Hugs and Headbutts,
Matt, Ava, KiKi and JuJu