Nice, I was thinking to go with .5 again as it shouldn't be too much to risk putting her in danger. Now that you have given that and (I assume) she's just eaten I would leave it to a bit later to try and get the test. At +1 hours after the shot there is likely to be a bit of a spike from the food, waiting 2 hours will be better and if unsuccessful then, and Noodle permits, you could try every hour up to about 5/6 hours after the shot until you get one.
You won't be able to get hold of them until tomorrow but here is the number for the relion people so they can walk you through what might be going wrong: 1-855-776-0662, Monday through Friday, 8am-6pm EST. I would ask them to send you some control solution too (it's free here, I assume it would be free for you too) so that you can check that part of the meter operation.
ETA - I just saw you had E-7? in Noodle's last condo - that one is for insufficient blood