Im really freaked out because?

She should be fine. As long as the lady didn't touch your baby or take off her mask and breathe directly on your baby, it would be incredibly hard for your child to get those germs. I have been around people who have had the flu or had a mask on...I just make sure to wash my hands, wipe off faces and hands on my kids, and use some Lysol spray on door knobs and such. My kids have been fine. I know what it feels like to be worried about it though. Being a new mom is stressful!