If You Are a Praying Person, Please Do

My husband is flying out of town tomorrow to be with his younger sister as she is having open heart surgery.  She was born very premature, and had a heart condition.  She had a first heart surgery at age two.  She is now 20 and the doctors recently found that she had a grossly enlarged ventricle due to a leaky mitral valve.  She had the ventricle drained last week, and Tuesday morning she is having a valve replacement done.  I just wanted to share this with anyone I could.  The more prayers for her the better. =)