Justice League of America Vol. 8: Dark Things
Collects JLA #44-48, JSA #41-42 (originally published 2010). Supergirl appears in JLA #45 (where she joins the JLA) to 48 and JSA #41.
The return of Jade in the pages of BLACKEST NIGHT heralds the release of the powerful Starheart that empowers her father, Green Lantern Alan Scott. Now this chaotic force is unleashed on Earth, causing magic to go wild – and new metahumans to emerge! It’s more than one super team can handle, but can even the combined efforts of the Justice League and the Justice Society contain the light and dark power wielded by one of their own?
Justice League of America Vol. 9: Omega
Collects JLA #49-53 and Starman/Congorilla #1 (originally published 2010-2011). Supergirl appears in #49-53.
The World’s Greatest Super Heroes battle the Crime Syndicate in the streets of Washington, D.C. But a new villain bent on his own form of conquest prevents any other heroes from helping save the nation’s capital. It’s up to five members of the Justice League to save the city’s people, with serious repercussions for one Leaguer.
Justice League of America Vol. 10: The Rise of Eclipso
Collects JLA #54-60 and JSA #43 (originally published 2011)
Supergirl appears as “Dark Supergirl” in JLA #54, 55 and as normal in JLA #59, 60 (following events of “Reign of the Doomsdays”). Appears in a vision of possible futures in JSA #43.
Eclipso returns, and he’s going to take down the heroes who have defeated him so many times before! With his army of both heroes and villains under his hypnotic thrall, Eclipso may have the team’s number. Will the combined might of Batman, Donna Troy, Blue Lantern Saint Walker and even the all-powerful Spectre be enough to stop him?