First of all, this "River" person's true nature is even questionable at best.
Then suddenly, oh, say, after several months the subject of said "person's" death just casually comes up in passing conversation. Just at the same time we're getting "Sink your teeth into this" posts, posts about wanting to leave Juventuz with a bang... It somehow just never crossed someone's mind to make mention of this earlier.
Even if you were telling the truth, for which you are completely not (at least "literal" truth) -- the nonchalant and casual nature with which you have supposedly handled a so-called acquaintance's death, and someone people interacted here on this forum and had interest in her whereabouts, would at best say about you that you're callous and inconsiderate of human feelings. So you are either a grand fib teller or someone with no compassion for another person's life whatsoever. And my money is completely on the former.
You didn't think this out, did you?
But either way -- hey, I'm certainly entertained by fiction now and then. Nothing wrong with a little virtual discourse, even if it is fantasy.