Hmmm. Interesting combo. Diana runs into Eliza, stumbles upon her meeting Goliath, and sees the humanity in Goliath and his clan.
It happened twice before, but Darkness and DC (though, kind of have to wait for the new Darkness series to come out). Jackie already came across Batman (set him on a path to clearing out the worst of the worst and becoming a not-so-bad guy) and Superman (Eddie cleared out organized crime from Metropolis while helping rescue a captured Lois and deal with Metallo).
Those stories were actually canon to The Darkness, but were considered Elseworld by DC (kind of a shame, but I see where they're coming from).