Reva then walked up to the boy, igniting her saber intent on killing him as a means of revenge on Vader. She raised her blade in the air, but was hesitant to strike as she began seeing herself as a Jedi Youngling in Luke's place. After a few seconds of hesitation, Reva couldn't bring herself to kill Skywalker.
In the end, despite having gone to kill Luke Skywalker, Sevander could not bring herself to do it, as she realized doing so would have made her just like the one who killed her family, and she dreaded becoming him.
Reva went after Luke because after she Vader wounded her and left her for dead, she saw Bail's transmission to Obi-Wan… … she put things together and realized that Luke is Darth Vader's son. So things got pretty straightforward from there, right? Vader took her family, so she'll take Vader's.
Reva's Dark Side Power Made Her a Formidable Survivor
When she was a youngling, Anakin Skywalker stabbed her with a lightsaber during the Order 66 massacre. She survived the attack, however, and lived to seek her revenge as an adult.
Although Luke Skywalker maintained a projection for several minutes, giving all of himself to the Force to allow him to physically interact with his surroundings, the strain cost him his life.
How Did Reva Know About Luke? - Obi-wan Kenobi Finale Explained
Why was Luke afraid of Rey?
The aged Jedi Master had given up on the Force, blaming himself for Ben Solo's fall to the dark side. Luke eventually relented, but he was clearly wary of repeating his past mistakes. In one key scene in Star Wars: The Last Jedi, Luke watched with fear as Rey dove straight into the dark side of the Force.
As brother and sister touched, Leia understood that Luke wasn't physically there, but a Force projection. His confrontation with Kylo bought the Resistance time to escape Crait, with Poe taking charge. Aboard the Millennium Falcon, Rey wondered how the remnants of the Resistance could possibly keep fighting.
As the Grand Inquisitor made clear, neither he nor Vader had any further use for Reva, and therefore they didn't consider her even worth killing. Instead, they left her crawling in the dirt because, as he had told her before, she was “the least” of them.
Reva knows that Anakin Skywalker is Darth Vader because she was one of his targets—a child—during the Order 66 killings that took place during the events of Star Wars Episode III: Revenge of the Sith.
The tragic past of Reva, a.k.a. the Third Sister, is revealed in the fifth episode of the Obi-Wan Kenobi series, which Darth Vader is somehow already aware of.
Seething with ambition, Reva hunts down Jedi survivors of Order 66 as an Inquisitor. She wears the sleek armor of the secret order, and brandishes a unique lightsaber that can split in two to maximize her lethality.
After taking a lightsaber to the chest from her worst nightmare, the lost youngling is left in the base on Jabiim to die a slow death. But she's a crafty survivor, and a mistake on Bail Organa's part has given her something to live for: the knowledge that Luke Skywalker exists.
We learn that the reason Leia was kidnapped in the first place is because Reva knows that Obi-Wan and Bail Organa knew eachother in the clone wars. And thats it. Literally nothing else.
Beattie, who “created Reva all the way through” and was ready for a “full trilogy” of films centered around Obi-Wan, explained that Reva hated Jedi because she didn't know that Darth Vader was Anakin Skywalker, who left her for dead after turning to the Dark Side.
Conveniently, Luke is completely knocked out for the rest of Reva's visit, and so he never sees her lightsaber or the conversation between her and Obi-Wan.
As Reva, the Third Sister, revealed earlier in the episode, she faked her death to cheat Anakin Skywalker the first time. However, it seemed that Darth Vader might have left her alive on purpose this time. Instead of giving Reva a fatal hit in the chest, Darth Vader only severely injured her.
And while his warnings don't work, at the very least, it shows that Maul became aware of Anakin and what he would soon become. With the rise of the Empire, it's likely Maul caught on to Vader's existence pretty quickly.
Why did Vader not use his lightsaber against Reva?
Essentially, Vader is toying with Reva here. Anakin Skywalker has never been an efficient or pragmatic duelist, and is famously prone to showing off - even during his Star Wars original trilogy bouts against Luke Skywalker. Vader callously enjoys playing with his prey, tormenting Reva to make himself feel powerful.
Reva was a Jedi youngling who was present in the Jedi Temple during Order 66. When the clones raided the temple, Reva and her fellow younglings found Anakin Skywalker and asked him for help, only for him to kill them all. Reva survived by playing dead, and she swore revenge on Anakin.
For some unknown reason, Anakin may have spared Reva personally, creating the abiding connection between the two. In that regard, Reva may be a dark Ahsoka, the Padawan he trained after his fall and imbued with all of his hatred.
And Reva finds out that Padmé, Anakin's friend, secretly gave birth just before she died… Padmé, who seemed to share a very close bond with Anakin, and who worked closely with Senator Bail Organa. Reva's able to put two and two together – she realises that Leia is Anakin's daughter.
In-universe, the aurodium-plated chance cubes were Han's lucky charm, whether adorning the windscreen of a stolen landspeeder, tucked into the palm of his beloved friend Qi'ra, or clutched in the hands of his son, Ben Solo.
