Sorry that you didn't get a faster answer, Sharlyn .
The best thing to do is cases like this is to Stall, don't feed and test again in 20-30 minutes to see if the number goes up without food. Usually if it does, it's OK to go ahead and shoot but we do like to have somebody with experience who's willing and able to stay online with you as long as necessary the first few times you shoot a lower Pre-shot.
Stalling 20-30 minutes can be made up easily the next day to get you back on your chosen shot schedule.
Just an FYI....since you have 2 diabetic cats, it'll be faster if you say which one you're asking about in your post

I understand this one is Perty!
I saw you had decided to skip which is OK too. Next time, don't panic...just don't feed, post with a really clear subject line like "STALLING! NEED HELP!" (it usually works...LOL) and test again in 20-30 minutes.
One important thing to remember about Levemir....a lot of times, the lowest number of the day will be the Pre-Shot so you have to try to remember that you're not shooting the number she's at now...you're shooting the number she'll be at in 3-4 hours (during which time she would have been fed her regular meal at least before the next shot starts to "kick in")