Sometimes rashes do come back. I wouldn't assume it's a peanut allergy. At 19 months she can easily do scratch testing for allergies to see if it's really a peanut allergy. It seems unlikely from the story that it's really a peanut allergy. There are thousands of things that can cause rashes.
This. Why not just have her tested. Also, didn't Hadley break out in the same rash?!? It just seems more likely it would be something they both came into contact with rather than chocolate chip cookies that were stored with pb cookies.
Hadley has a rash all over, although I'm not even sure if it's a rash. It's just her skin is pimply, flesh colored, I really feel like her's is dry skin, my gut says it's nothing to worry about. My cousin's little girl's is red hives, I was wondering if they were the same thing the other day when I posted, but after seeing a picture of her's it's definitely not the same.