Cyndie, I lost my dad a few years back to heart disease and emphysema.  He never could kick those smokes.  I quit a few years before he died.  Your mom can do it!  She will be my prayers.  It sounds like she has a good support group and she's motivated.  I wish you all the best as she recovers her health and, heaven knows, ANYTHING is possible if you have faith!  The human body is a marvel.  She CAN heal.
Bobbi