In the world conjured for Hinata Hyūga in the Infinite Tsukuyomi, she married Naruto, the hero of the five great nations. She later gave birth to a son named Boruto and a daughter named Himawari. Neji was alive and was a proud uncle, always waiting for the opportunity to play with his favorite nephew and niece. She watched Naruto, as always, as he ascended to take his place as Seventh Hokage of the Village Hidden In The Leaves. She watched as peace disseminated throughout the five nations and her friends settled into a life of peace and happiness with children of their own. She watched Boruto grow into an almost mirror image of his father at the same age, a walking attitude problem. Himawari was an angel, except for when she wasn't, usually whenever Boruto made her angry (he vowed never to do that again when she awakened her Byakugan). Hinata was loved. She had everything she always wanted. She was happy.
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In real life however, Hinata, along with all her friends, her family and pretty much everyone else on the planet was tethered to the Shinju tree and cocooned. Their chakra was being drained, used to create a new chakra fruit for Princess Kaguya Ōtsutsuki. All for a good cause, however. Kaguya was creating an army to prepare for the invasion of two of her clan's descendants. They wanted her power, and so, she will use as much as the people of this world to make her army. Everyone else will be spared, but hypnotized into worshiping her as their goddess again. Oh, and she will have no children this time. She can't let anyone take away what was hers ever again.
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The first thing that was gone was Hinata's clothes. She didn't even notice them disintegrate.
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A year passed. Hinata was being drained of everything. Her chakra was almost entirely gone along with her jutsus, and soon everything else would too.
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Another year passed. Hinata was starting to resemble a mummy having been drained of chakra. Now her body was being drained as well. Her skin tightened against her body, her hair was losing its natural color and her eyes had lost her Byakugan. The dream was coming to an end.
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As the years went by, Hinata's self was being drained along with what was left of her chakra. Her thoughts were replaced with orders from someone named Kaguya-hime. Orders on how to be a proper soldier to follow her into battle. Hinata listened to them with no hesitation.
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After a couple more years, what was left of Hinata in the cocoon was nothing more than a withered husk with no sense of self, just like all her friends and family. Now the second phase can begin as the cocoon very slowly started to tighten itself around her body.
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A year later, the cocoon had almost become a second skin. Arms and outlines of facial features started to appear on the cocoon as her body started the second change.
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A couple of years later, the legs had formed as well.
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Finally, the cocoon started to peel away after a month. Underneath it was not Hinata. The skin was chalk white with jagged lines, the hair was short and green, and the eyes were yellow. In Hinata's place was White Zetsu, the perfect soldier for Kaguya and one of millions just like her. And with none of their original selves' personalities and defining features.
Kaguya smiled. An army of a million strong, plus her own power. Her two usurping relatives will never stand a chance. She will save her world and rule it once more. Now all she had to do was train them to prepare for the upcoming battle.