As days went by, young Sakura Haruno fealt that Sasuke was never going to come back to her. [& if he did, he wouldn't love her anyways.] So she gave up on him completely. After she did this, she realized that rejection was extremely painful, & she didn't want anyone to ever have to feel it. Then she finally saw how badly she had treated Rock Lee. Lee was a nerdy boy, yet very strong, who had the strongest love for Sakura & would've done anything to save her. [he'd proved this to her many times.] She finally realized who really loved her, & who she loved, so they got married.
After this fact, Sakura came up pregnant one day, & it was to be a girl. When she was finally born, she had everything about Sakura. Her looks, long pretty hair, [though it wasn't pink] deep eyes, & gorgeous smile. So she wanted to have something about her that reminded everyone of Lee, so they named her Lei.
Lei grew up training extremely hard constantly by her own choice. [She gained her dads passionate & determined attitude & dedication.] Like Lee, she didn't have much chakra control so she mostly worked on her taijutsu & some medical ninjutsu. With the help of grandpa Gai, & her father, she mastered taijutsu & could even hold her own with both of them in a sparring match because she gained her mom's incredible strength. Growing up in the academy, Lei was believed by many to be the strongest young kunoichi there. She tried to be nice & get along with everyone. After a while, she befriended everyone with her charm. Thus, Hinaru fell in love with her. At her Genin graduation, she was assigned to team 1; with Hinaru Uzumaki [son of hinata & naruto] & Waruji Uchiha. [son of sasuke & karin] Then it all went from there.

an RPC done on MS paint only. off of a screen shot of Sakura.