Hi Jess,
Putting myself in such a situation, I could that it would bother me too, maybe not for the same exact reason, yet, it would bother me. So, it's perfectly understandable. I would suggest, at the same time, that you try and let it go, because it's affecting you, not her, and when it continues to do so, you're going to wrack yourself with unnecessary worry.
On the other hand, you could always thank her for her concern and let her know that you're okay. At this point of time, what's happened has happened, and an option would be to be thankful that it waa someone who showed concern and care rather than someone who was nasty and mean about it. Don't feel bad. You have no reason to.
Hope you feel better about all this soon
do message me if you need anything