I think we can breakdown Barb's death into two parts: the immediate aftermath, and the future beyond
In the immediate aftermath, chris will probably continue to play into his delusions of the merge while (hopefully) Null and/or other trusted people attempt to secure a simple, private funeral for snorlax. Funding for this will probably be secured from weens and weirdos on reddit. I'm not sure if barb has life insurance but if she does, chris will receive the money and promptly spend it all on toys.
However the future and beyond is a toss up and its anyone's guess as to what happens to chris. My take? Debtors will collect his house since without barb collecting rent from chris, no one will be attempting to pay debt owed by the chandlers. The state won't give a shit about him and chris will most likely die homeless.