It is possible that teething is causing the diarrhea. Babies drool a lot when they are teething, and they swallow a bunch of it. This leaves loose stools. So, it sould be the teeth, but it's not something you want to bet on, because the side effects of diarrhea over long periods of time can be harmful.
Take her back into the ped. when he wants you to if it is still going on. Make sure to keep her as hydrated as possible. I like the Gerber Liquilytes in powder form for this. It's right with the baby food, and you add it to water. It keeps electrolytes in balance, and tasted like fruit punch, so she'll suck that right down! you can try the food remedies that worked last time.
What you might want to do is keep track of her food intakefor a little while. That way, if she comes down with another bout of this, you have a record, to try and pinpoint if her stomach is being upset by something she eats. If you see a pattern of diarrhea after a certain item in her diet, then you can try eliminating it. Unfortunately, you can't do that if you can't remember what she had and when. And really, who memorizes their kid's meals?
Best of luck figuring it out, and I hope she feels better soon.
P.S. - Go Yanks!!