These things happen. The grooming session may have upset her sensitive system - my theory is they probably gave some crappy treats to her at the groomer
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Agree with the YT above that some plain yogurt will help settle her tummy I use that!! & I also don't go to the vet for intestinal issues. I learned that the hard way!! If she is over 10 months, you can try skipping a meal to let her tummy settle - but I wouldn't do that if she is under 5 lbs or 10 months.
Either way, let her guide you, if she seems normal, she most likely is and it may take a day or two for her poop to solidify...You can also add some probiotic to her regular food. It just promotes beneficial flora in the intestinal tract and helps regulate things. Helps a LOT with farting!!
I use Solgar acidophilous and probiotic for humans, available at any GNC. I sprinkle the capsule in a few tablespoons of plain yogurt or over their regular food.