Julia Hsu posted a note for Allison that says:
I am sorry to hear about Sassy's heart condition. I was born w/ bicuspid aortic valve, but didn't know for over 30 years. Last fall I was absolutely shocked that I need replacement in a year. I just had a Ross procedure done a week ago & am home now.
I strongly urge you to research Ross procedure, Adam had it done & had some info on the website. You are not far from Dallas. I strongly recommend Dr. William Ryan at the Heart Hospital Baylor Plano. You should get Sassy evaluated to see whether she is a candidate. Ross was invented for children, but she ascending aorta might be a problem. Dr. Ryan did my Ross & is a specialist on this technique.
If you want all the info I have gather on Ross, leave me your email address & I will send them to you.