Good idea, had thought of it, just seemed like it was the too obvious answer. Although she's not a supermodel currently, sounds like a good enough idea.
Now, the questions, what was she protecting? How does a mother and child sound? And from what? Slavers? A corrupt (perhaps fiend or yuan-ti) father? Follower of Loviatar? I'm not 100% on top of my FR knowledge so I don't have quick mental reference of general bad guys/organizations in the realms. And how is she scarred? Her face? What about flipping it around so that it is her soul that is scarred (but would that make her no longer exalted)?
Perhaps she was tortured by a priest of loviatar who was seeking his child? Ooo... what if it was her child, and that she had been tricked into lying with the priest, and perhaps she also has to give the child up to a monastery or to a celestial care-taker, or perhaps she has to confront the death of her child, although it wasn't her fault or anything she could prevent, the child died of natural causes but she blamed it on herself?
*ponders*