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The water might have given her a bit of a stomach ache. Water like that can cause vomiting, diarrhea and all sorts of problems. I suggest that, for the next 48 hours, you withhold her regular food and only feed boiled chicken or boiled hamburger and rice (no bones, no skin).
If this persists longer than that, you will want to see the vet to rule out a bigger problem.
Let me know if you still have questions.
If she is still vomiting and has diarrhea, you can give 1 tsp of immodium to help settle her stomach.
If you are not seeing any improvement, you will need to see the vet.