First, I didn't realize Abby has been on raw for a considerable amount of time. I don't pretend to be educated in raw diets, but is it possible she had a bad batch of food...spoiled, perhaps, that set off this recent issue?
The first thing I'd do when you finish the Forta Flora is put her on Dr. Goodpet digestive enzymes:
http://www.goodpet.com/library/pharmacyFiles/canine.asp
It really helps dogs with digestive issues and is a holistic supplement Abby can stay on forever no matter what diet she eats. It really helped Pixie and I gave it on the advice of the canine nutritionist I used to get her through the colitis.
When I said monitor her treats, I meant don't give her anything that you don't know the ingedients -- for instance, regular dog treats from the supermarket. Read the labels on everything you feed her. You can certainly give holistic, single ingredient treats or carrots etc., but I'd even be careful with those until you have her system straightened out. Stay away from dairy products for now (yes, even yogurt) and stick with as few ingredients as you can until she's completely normal. The crunchy chicken treats should be fine if they're just chicken but do read the label and make sure they aren't made in China.
Pixie eats two meals a day. Remember the more meals you feed, the more poops you get. Abby could continue to have off and on loose stools until you stabilize her diet and gastrointestinal tract. I did a lot of research and homework when I went through this with Pixie and learned a great deal about feeding and dog food. One thing I found from experience is when you think you're out of the woods and give just that teeny piece of goodie that's off the menu, you'll have a flare-up. Stick with the program and also add some canned pumpkin (pure pumpkin from the can, not the pix mix) to Abby's food and that might help too. Just a spoon per meal.
I hope this helps. Feel free to PM me if you want more specific information. Good luck!