ok - i think you will see high numbers, but she will get back on track.
since you're skipping the shot tonight, you can shoot whenever you want in the morning. so if her numbers are high and you want to shoot earlier than your usual shot time, that's ok.
if you get a preshot test and it's green, again, don't shoot. don't feed and post here for advice. she probably will be very high from the skipped shot. but in general, you aren't ready to shoot a green number.
you really do have to get in the routine of testing, then feeding and shooting. if you give rosy a treat every time you test her she will accept it better. we use the boiled chicken for a treat. the problem with feeding first is what you're having tonight - you want the BG number to not be raised because of the carbs in the food. i don't know a way you can do that without it causing problems.
there is another person who has somewhere around 20 cats. he has his diabetic cat eating dry food, so i don't think that helps your situation. if i were in your situation, i would take Rosy into another room, even the bathroom, to feed her and give her her shot. i would leave her in the bathroom and feed all the other cats. give everyone a half hour to eat and then pick up all the food. I would do that again 3 hours after her shot, then i would repeat again with the next shot and 3 hours or so later.
we have 2 cats, punkin & anya, and we shut them downstairs in our house while we're sleeping. otherwise they are scratching at our door and my husband wants to kill them. personally, i'd let them sleep with me if i had my way!
by the way, you didn't screw up. you didn't know - and basically everyone has that happen the first time they see a low preshot number. someone else had it happen yesterday. it's a natural thing to do, so don't worry. there will be many more opportunities for you to learn and you'll get to practice it again! :lol: