But I got to thinking, in my research to see if I could "figure it out" by looking up the horses in her pedigree, I thought I would start a thread for HYPP in the hopes that owners will post their horse's status here and others can know whether their horse is susceptible! Here is my mare's pedigree...I know for certain that her dam is N/N and she is N/N.
Coosa's Playgirl: http://www.allbreedpedigree.com/coosas+playgirl
Here are some others in her pedigree that I found are also N/N through my research...
Coosa's Breezy Lady (her dam)