My sympathies to your friend that is loosing her Dad to cancer, it's a really tough thing to endure. My GF lost her Mom to it about 3 years ago and it was a pretty sad deal to go thru w/ her, she was only into her early 60s.
Best of luck to the Bride and Groom, in a few years he'll be using my bottom quote,lol Gonna be an emotional ride comming up here for ya soon, hang in there for your friend.