Amber made it very clear (to his mind) that she didn't have the time to interact with him anymore. Dorothy did the same. If they want his help, they know where he is but I can't help but empathise with him thinking that it just hurts too much to want to go rushing to their sides anymore.
??
Nothing to do with rushing to their sides.
Nor thinking they are "wanting his help".
Merely that such an event happening, only three days previously, is unlikely to see
anyone even
remotely involved with those people yapping away quite happily about relationships and ukuleles.
If there's one thing we know about Danny, it's that he's a 'dweller'.
I don't know why this jump occurred, nor why Danny and Joe are acting so 'normal' for something so violent to have happened to two of Danny's exes (including one 'good friend' apparently), but it seems off-kilter to me.
YMMV, of course.
I can only think that the events of three days previous are (for whatever reason) not yet known by the general populace.
Although, with the amount of shouting going on at the time, it's hard to imagine how that could be the case.