Mom Diagnosed with Stage 3 Stomach Cancer 2 weeks ago :(

My 55 year old mom was diagnosed with stage 3 adenocarcinoma/signet cell carcinoma. About 2 months ago she started having severe sharp stomach pains and nausea/vomiting. She went to a local general practitioner who thought it was just a stomach ulcer and prescribed anti-biotics and pepcid and was scheduled to have an endoscopy after 1 month from the start of her symptoms although the the doctors office told us that insurance wouldnt pay for the procedure and they kept cancelling her upper endoscopy procedure. My mom wasnt even able to get through to this horrible doctor when she was in severe pain and his office would just tell her to go to the emergency room. Finally about 2 and a half weeks ago I came home from Medical school and saw for myself how sick my mom truly was she would wake up in the middle of the night crying in pain and trying to vomit. I am so angry that my parents didnt not tell me how sick my mom was otherwise I would have left med school right when she started feeling sick 2months ago but they thought it was just a stomach ulcer just like the horrible general doctor she pleaded with countless times to help her relieve her pain. To make a long story short as soon as I got back home from med school I scheduled an upper endoscopy with a different doctor within a few days and that was when the true nightmare began for me and my family. The Gastroenterologist called me into his office after my moms endoscopy and told me that it looked like stomach cancer and that he was 90% sure it was cancer but couldnt tell me 100% until he got back the biopsy result, her endoscopy was on a Friday and I had to wait all weeknd until the following Monday for the dreaded phone call from the Doctor tell me that the biopsy came back positive for Stomach cancer. The next day she was scheduled for a Cat Scan which came back clear for all her other organs beside her stomach which helped me feel a little better for a few days hoping that it was only localized to her stomach as the CAT scan suggested no spread to any other organs. The gastroenterologist referred me to a GI oncologist Surgeon (Dr. McCain) at Hackensack University Medical center in New Jersey, and I looked him up online and he seems to be a top surgeon in his field and also did his residency at Sloan Kettering in NYC. He told me it looked like my mom had stage 3 stomach cancer and that it would be best to do a partial or total gastrectomy, after he saw my mom I spoke to him in the hallway away from my mom and told him that I was medical student and asked him if a cure was possible, he told me that doctors dont like to say cure but instead use the word remission, and that he has patients that have lived up to 5 years and even has a patient 8 years post total gasctrectomy is still alive and ok. My mom had her total gastrectomy 1 week ago and she is still in the hospital very weak but has started to eat some soft food today and to drink liquids. Today the surgeon told me that at least 5-7 of her lymph nodes were positive for a mix of signet ring cell.adenocarcinoma, but he'll know exactly how many lymphs are positive tommorrow. My life and my families has become a never ending nightmare since her diagnosis. I have been staying with her in the hospital 24hours non-stop sinc her surgery a week ago and only going home to shower. I have been researching online constantly and have stopped looking at the stats because they make me feel even worse and start to lose it when I think about what might happen to my beautiful mom. Some websites say a cure is still possible in stage 3 in some cases and I pray to god my mom chemotherapy goes well and am hoping for a miracle even though I my family is absolutely terrified about the future and I know if god forbid if I was to lose my mom I will never be able to live a normal life without her, I cannot live without her. My moms surgeon told me that they would use the clinical trial therapy know as the "Magic Trial" on my mom and that it was made up of a triple combo of ECF. Does anyone in this forum know anything about this chemo triple combo? I am also looking into Memorial Sloan Kettering in NYC. Anyone have any suggestions? I am praying for the best and a cure although I know the odds are against us and I hope I will be able to keep myself sane in order to help my mom and hopefully save her I feel that life for me and my family is over and will never be normal again.. ((((