Samantha and Dan,
You are both in our thoughts and prayers. Your post took me right back to a year ago March 19,2007, when my life partner Rick was opened up for total gastrectomy and closed back up with a G-Tube hanging out of his abdomen. We had so convinced ourselves that he would wake up with no stomach and no cancer, it was devastating when the surgeon came out so early. We have had THE SAME EXPERIENCE as you. I understand your anger, it is normal, thinking about insurance fraud etc. The reality is that cancer cells are very small, and tumors or lesions smaller than about 2 cm. will not show up on scans. So they must do a laproscopic procedure prior to surgery to see if there are "floating cottons" running around in the abdominal cavity.
If there is any good news, I know you can't see it now, we went on chemotherapy drugs Oxaliplatin, Epirubicin, and Xeloda. IT HAS BEEN A GODSEND. We are a year down the road with minimal side effects, we have gone on holiday just about every three weeks in betweeen chemo treatments, and Rick is still feeling GREAT. That awful G-tube fell out of his abdomen in May of 2007 at my aunt's in California while we were sleeping. I remember waking up terrified when I saw it laying on the mattress, while his response was "Thank God that fell out". What a riot. It was a pain in the arse to clean, and while he always wanted an 8 inch hose, that wasn't it. (Humor gets us through a lot, sorry) We have now done 16 chemo treatments over the last year and still going strong.
You are both so young, my heart is breaking for you both. It will take some time, but you will be able to get your heads around this. Read everything in the "Stomach Cancer" section of this board as there are a lot of people who have traveled down this road ahead of you. While most of the news is devastating, there are some good news stories as well. Make sure you are comfortable with your oncologist, honest and caring, or get another one. You didn't say where you guys live, there could be some great referrals here on the boards. Remember you need to be a advocate for Dan and don't stop until you understand everything.
Holler out if you need advice or an ear, there is a lot of great advice here at Cancer Compass. Hang in there, the shock will pass with some time and you can move on to treatment and living your lives to their fullest. Every day is a blessing and you will find your attitudes toward life changing a bit.
Peace and Love to you both,
Scott