HELP VERY WORRIED ABOUT BABY?

Just got back from taking my son to the doctor and to get pancakes. My baby sitter told me my daughter feel asleep during her feeding but woke up 3 hours later and drank her bottle. She is 9 weeks old, her formula is the liquid form that has to be refrigerated, and the bottle set out for three hours after being used to be used again. Will she get sick?