I also had the Whipple surgery. The doctors had found a growth in my bile duct that they thought was benign, unfortunately it was not. The doctors performed the Whipple and after 8 weeks I felt almost back to normal.
I am now being treated at MD Anderson www.mdanderson.org
I haven't found much information on ampullary cancer-on the internet or in books. And what I find is very dated (even late 1990's is OLD) or too depressing. I tend to group it into pancreatic cancer. I am also seeing a Dr. who practice Natural Medicine in order to keep my immune system up. I only found out about the growth in May of 2007 and things have moved fast for me. I am undergoing chemo-pills and IV in order to hopefully prevent or discourage a reoccurrance.
My main suggestion would be to keep digging. Send notes to webmasters on sites like this requesting specific info on ampullary cancer. I sadly joke that we don't even have a brochure on our disease-no support group or cool rubber bracelets. But it starts with someone asking.
I have tried to stay connected to people who have gone through this (cancer) before who can really relate, people who are positive and people who are praying!
Best to your mom. Keep digging.
TNMom3