I called the vet the first thing this morning and the one that called me back said to just monitor the situation for now, make sure she is acting normal, eating, playing, sleeping and stuff. She said it could be something from her spay, the stress of the trip or a different treat, a bug....ANYTHING.. She said it is not at all uncommon for cats to have blood in their stool and there are many different things that could cause it. Just watch her close.. I called the vet my son uses in his area and we have a temporary thing worked out until I can get back from the river next time, then I will go in and sign a paper guranteeing I will pay all medical bills on them... (That is something I should have done when I got Amy! Shame on me! )