Giant hugs, mama. You did what you thought was best for her at the time. I can totally understand the guilt, but I think any of us would have done the same thing in that position. I know I would have.
I'm so sorry like others have said please don't feel guilt for this, there wasn't anything else you could have done. You needed to know if she was sick so you could help her. Hugs
I'm so sorry you're having these feelings but you did what you needed to do at the time. It's amazing what these kids remember, but also how quickly they can forget the same things.
Oh sweetheart I am so sorry. You did the right thing, she would have needed treatment and you would have had no way of knowing otherwise. I think sometimes toddlers fixate a bit. I hope she forgets soon, she may just be working it out in her head. Please don't torture yourself about this, you are an a!azing mom. Also, numbing stuff is available but a lot of docs won't order it, you could push next time for lidocaine jelly or emla cream if this ever comes up again. So many hugs.