Alfred informs Bruce that people are in danger, which Batman tells Flash that he needs to save the civilians. Diana and Arthur try to keep Steppenwolf away from Cyborg by using the Lasso of Hestia to pull him down, then Steppenwolf attacked them both before he knocks Arthur into a wall breaking the ceiling before Diana saves him. Cyborg tries to keep Steppenwolf away from him, but fails which leads with Steppenwolf pulling off one of his legs.
Later, Diana is seen in the Gotham City Museum of Antiquities (with ancient Greco-Roman exhibits), conversing with an elderly couple, when the curator comes up, and offers to show her something of interest. She politely excuses herself and follows him to the exhibit of the fake replica of Alexander the Great's sword, which the ancient conqueror of the Middle East had used to cut the Gordian knot.
After the meeting, Trevor's superior berated him for taking a woman into the war room. Morgan then introduced himself to Diana. She began to introduce herself as "Diana, Princess of Themyscira," but Trevor cut her off to maintain her secret identity, calling her "Diana Prince." Trevor then informed Morgan that he'd managed to steal Doctor Poison's notebook.
Cheetah sought revenge upon Veronica Cale for abandoning her, and attempted to murder her, but was stopped by Wonder Woman. Cale refused to transform Cheetah back to her human form, and Cheetah herself decided that she no longer desired to be human. Having left her Lasso of Truth binding Phobos and Deimos, Diana was given it back by the Olympian Gods and reunited with Steve.
When Diana returns she takes on the persona of Diana Prince, now a secret agent and member of the Department of Metahuman Affairs. She is partnered with Nemesis and the two report to Sarge Steel. Her first assignment is to retrieve her sister Donna Troy, who has been kidnapped by several of her most persistent enemies; their powers have been augmented by Circe. After this is accomplished, Diana takes back the title of Wonder Woman.
(For the record, Marston and Olive Byrne’s son, Byrne Marston, who is an 83-year-old retired obstetrician, thinks that when Marston talked about the importance of submission, he meant it only metaphorically. “I never saw anything like that in our house,” he told me. “He didn’t tie the ladies up to the bedpost. He’d never have gotten away with it.”)
By the time that Robert Kanigher took over the character, a change away from traditional comics as a whole was accomplished. He eventually veered completely away from superheroism and essentially only told stories involving the Wonder Family, which consisted of Wonder Woman, her teenage version Wonder Girl, her baby version Wonder Tot and her mother. This eventually proved not very popular and Kanigher was forced to rethink the character and cast her in a more traditional superhero context (he actually explained this decision in comics to the reader with his various creations vying to remain in continuity against his wishes). It was at this time for instance that Wonder Woman saw the return of some characters that had been missing for some time such as the Cheetah or Doctor Psycho. It was also at this time that she became a founding member of the original Justice League of America.
In order to defeat them, Superman and Wonder Woman collected the magic armor created by Hephaestus and intercepted Zod and Faora while they were building a portal to the Phantom Zone. At first, they defeated Zod and Faora by detonating their armor at point-blank range, but Zod and Faora were revitalized by a beam of sunlight sent by Apollo, which gave the criminals enough strength to beat Superman and Wonder Woman and trap them in an abandoned nuclear reactor. As a last-ditch effort to stop their enemies, Superman and Wonder Woman caused a nuclear explosion, but not before Clark told Diana that he loved her. The explosion trapped Zod and Faora back in the Phantom Zone, and Superman shielded Wonder Woman with his cape. The two heroes barely survived the explosion and Superman took Diana to Hessia, who used a healing crystal to save her.
Born to Hippolyta, Queen of the Amazons, Diana lived a serene and joyful life until the intervention of Steve Trevor upon the island of Themyscira. A tournament was held among the Amazons to determine the representative that would return to Man's World along with Trevor. Diana defeated the other Amazons but was tasked with the final challenge, deflecting a bullet fired from a gun by her mother. After winning the contest Diana was awarded a suit of armor and the Lasso of Truth and left for the United States, though upon her arrival she was arrested and detained in a cell. Falling into despair, Diana was visited by the Gods of Olympus in their animal forms: a peacock, deer, owl, mouse, eagle, dove and tortoise, who granted her the gifts of strength, speed, endurance, empathy and flight.
Perhaps due to her Amazonian background, Diana greatly respects other noble selfless warriors, as evidenced when she attended Superman's funeral in Smallville and spoke of how he had been much more than a soldier (adding to what Batman said about Metropolis burying an empty casket). As a result of her great posthumous respect, she was, therefore, more than willing to aid Batman in honoring the heroic death of Superman, by helping round up the metahumans from Lex Luthor's files to form a team of superheroes (later known as the Justice League) to protect the world from the imminent mysterious alien invader Steppenwolf and his Parademon minions after Superman's death left the world vulnerable.