Try not to let some of the posts panic you too much. I'm sure she will be fine until the morning since you say she is acting perfectly normal other than throwing up her food once. Make sure to follow up with your vet in the morning and if something changes drastically during the night you really should take her to the ER vet. I'm in Chicago and if I could be of any help let me know. I've got friends at the Humane Society and they might be able to even take a look at her there if you are short on funds. I believe the Chicago Ridge Humane Society works on a sliding scale.
__________________ “Never argue with a fool, onlookers may not be able to tell the difference.”  Mark Twain |