Not An Example of Stuffed Into The Fridge, as a) Rose didn't die as you mentioned, and b) It's mentioned a couple of time in-game early on, and more so in Codecs, Raiden initially started fighting again to help provide for his family due to the tough economy post-Patriots and because he literally couldn't get a job outside of warfare due to a variety of reasons such as discrimination and his own personal demons. However, once Raiden started fighting again, and getting involved with PM Cs, he knew he could not go back to his family right away as that could make them targets due to taking on trillion-plus dollar companies that could easily hire assassins. It's also why Raiden's family lives in New Zealand, rather than America (even though Raiden and Rose met in New York), they don't want to risk their family's safety in America since Raiden helped take on the Patriots in MGS 4 and now Desperado in Rising, who are both heavily linked to America. (Reposted from Metal Gear Rising edit page) Additionally, Rose was not the only important person in Raiden's life, and Metal Gear Solid 2 goes out of its way to show how there are other important aspects of Raiden's character when he develops it himself, and how anyone including Rose can have good and bad effects on him (let's not go too much into the Mind Screw that is MGS 2 though).