For people speculating on Chris' tugboat, perhaps a little clarity would help here.
Yes, he might see a minor increase in his tugboat when Barb dies. MIGHT. The reason being is that if someone else is sharing your expenses they'll actually lower how much you get paid, whereas if you're on your own completely they'll give you slightly more.
SLIGHTLY more. As in, maybe a couple hundred. Let's say Chris is sitting on about a grand a month from his tugboat. If that's been decreased because he's receiving "financial assistance from outside sources" such as a roommate (or parent) paying part of your rent or utilities, then when Barb dies he may see a very minor increase in his cash benefits to offset what he's no longer receiving from outside the Social Security system. But they absolutely won't increase it enough to match exactly what he's no longer receiving.
Make no mistake, this likely wouldn't keep Chris afloat in his current existence. Unless they own 14BC outright and have no mortgages against it, it's just not going to be enough to keep the place. Not with Chris' spending habits and complete inability to be responsible.
Increase or not, Chris is gonna have no make some tough decisions. Like moving out of the home he grew up in and settling in an apartment which, given that they're usually owned by people who will actually snoop around to make sure you aren't fucking things up in there, is unlikely to last very long in any given place.
The other choice, the only other choice I can think of, is that he's going to have to learn the finer points of subleasing and start renting out rooms. But knowing Chris he's gonna end up bringing on absolute speds as irresponsible as himself and he'll be unaware that you can't simply toss out a legal tenant without going through the proper procedures.