I'm still not fully buying into Sven being crushed by this whole thing, clearly I have no heart.
I won't speculate on how you move nutrients, etc. though your body if this is the case, but I do think you're on to something about Sven. From what I saw in 1438, I don't think he's crushed so much as perplexed, perhaps even frustrated: things aren't working out the way they're supposed to. I do think Sven's finally come to the realization that what's happened is in part his fault, which is progress, and I think he's angry and unhappy, yes, but hardly crushed.
Remorse? Have we seen remorse from the Sven? That last 1438 comes close, but not quite. When Sven gets to "what can I do to make this better for Faye," without an "and me" in there, then we can talk remorse.