Dawn looked to be genuinely shocked and apologetic. People react instinctively when they're suddenly hurt and Beth stabbed her with little justification. It put
everybody in the corridor at risk as well. We're lucky that it was
only Beth and Dawn that were killed since things could have been much worse.
As for Daryl's attitude regarding the wealthy he's shown blatant disregard for the deceased if they happened to be rich in life on two separate occasions. If I recall correctly he even picks up a guy's family photograph when hiding out in a wealthy individual's office and begins firing off insults. How would he feel if someone mocked Sophia or Beth after they died, I wonder?
Granted that's more of a personal pet peeve of mine since a lot of shows seem to attack the wealthy at any possible turn just because they're perceived as being well off.