The demon Neron engaged Diana in battle and managed to kill her. The Olympian Gods granted Diana divinity and the role of the Goddess of Truth who started to reside in Olympus; her mother Hippolyta then assumed the role of Wonder Woman and wore her own different incarnation of the costume. In Wonder Woman Vol. 2 #136, Diana was banished from Olympus due to interfering in earthly matters (as Diana was unable to simply watch over people's misery on Earth). She immediately returned to her duties as Wonder Woman, but ran into conflicts with her mother over her true place and role as Hippolyta seemed accustomed to her life in America. Their fight remained unsolved, as Hippolyta died during an intergalactic war. Themyscira was destroyed during the war, but was restored and reformed as a collection of floating islands. Circe later resurrected Hippolyta in Wonder Woman Vol 3 #8.
As Hippolyta was still a clay statue, Diana was forced to take the Amazon throne, at least until she could find a way to turn her mother back to normal. At the same time, the Justice League had discovered strange environmental events that had destroyed small villages around the world, leaving only vegetation behind. Furious, Wonder Woman attacked Swamp Thing, accusing him of causing such devastation, while Swamp Thing claimed innocence. Aquaman defused the situation before it could escalate any further. Later, Wonder Woman returned to Themyscira, only to discover Hippolyta's statue had crumbled. On a training session, Clark asked Diana if she wanted to talk about her recent experiences, but Diana replied that, as queen, grief is not a luxury she could afford. Later, Diana was called for a meeting by the Amazon council, which forced a choice on her: become permanent Queen or abdicate the throne. Before the discussion could continue, the island was attacked by Stymphalian Birds, Ares’ pets who were now drawn to Diana as the God of War. Accepting her new responsibilities, Diana successfully defended Themyscira.
Wonder Woman, while in her guise as the human Diana Prince, is an extremely experienced genius antiquities dealer, with Diana's tremendously long immortal life and natural fluency in all human languages allowing her to accumulate an immense amount of knowledge on the subject, though (being an Amazon with Old God heritage) she seems to specialize most in ancient Greco-Roman antiques. Hence, Diana works as Curator for the Department of Antiquities at the extremely prestigious Louvre Museum in France, and she is held in very high esteem by the curator of the Gotham City Museum of Antiquities. She was swiftly able to tell that the museum's exhibit of Alexander the Great's sword was a fake, knowing exactly where the actual sword was and impressing Batman himself.
Following the events of Infinite Crisis, she disappeared for a year in order to rediscover herself, and took part briefly in the events of 52. In the span of One Year Later, she was re-imagined once again and was forgiven by Batman and Superman while given her third ongoing monthly title. Batman helped her establish a role at the Department of Metahuman Affairs under the name of Diana Prince (paying homage to her golden age alter ego.) She worked alongside Tom Tresser and eventually became romantically involved with him. A move among fans across the different companies occurred with characters reverting to their original numbering of series (this for instance happened to Iron Man at Marvel as well) and the third Wonder Woman series was relaunched with Wonder Woman #600. This was actually accurate at the time as it was the indeed the 600 issue released (not including issues numbered otherwise such as with a zero or a million). Issue 600 was used as a chance to reinvent the character as she discovers herself with no memories and in a new costume. This was a short lived experiment as the entire DC lineup was soon to be re-imagined into the new 52, though certain aspects of her redesigned costume remained.