It seems "unhealthy" to you that a mother would want a picture of her child??? Trust me, it's nice to have when some blowhard makes a comment like "it isn't like you lost a real child", so you can whip it out show how amazingly "real" that blob of cells looked.
No. It seems unhealthy to continually go back to an event which brings such pain to one's heart. The mother's response, "when I start to forget..." It is healthy to move on. You don't forget the child. You don't forget the pain. But you don't live there.