The mother was using what?

A dangerous substance, to be sure, but she cannot guess what. Jax is from somewhere far more advanced if they are able to identify holes in the stomach and flaws in the hearts of newborns.

"Then you are in the unenviable situation of waiting around to see if he continues to heal."

Perhaps it is foolish sentiment, but she is not unsympathetic. Reaching into a pocket hidden in her skirt, she removes a very small charm, flat and square-shaped, the deep red color of a rose petal. It originally bore a protective glyph, though that has been worn nearly as smooth as the opposing side. Once set in a necklace she was fond of wearing, it only recently fell out when she was packing to leave for Skyhold. Its benefit to resistances is minor and she has access to far better charms now, but she likes the color and had thought to have it crafted into something else.

There is no need, though.

"I can offer you this. I have no use for it, but it has always made me stronger. If placed by your son, perhaps it will do the same for him."

It may not even work if he leaves with it, but there is certainly a chance.