It could ust be chostochondritis, I have it sometimes and it varies from super painful to dull. If she had a car accident because of it though, it could be her heart. Deffs check on her, I hope she is ok.
not always heart.pulled muscles, acid reflux.
it could be her heart, go see her
only a doctor knows what it is, it could also be something else, they'll check it out, my sister's saying shes having chest pains, i wonder if its her heart, i dont even live near her, so im going thru the same thing