Reboot

Haruno Sakura lived a sad life full of pain, suffering, trauma and death.
As every shinobi's life had been before peace had became more of a reality.
A war heroine, the world's strongest Kunoichi and best doctor, she fulfilled her longtime dream of marrying her love and mothering three Uchiha children. Sadly her husband didn't love her, being too damaged by the past to care about anything other than fulfilling his duties.
She grew bitter with self hatred, depressed and envious of her friend's marriages, but the pinkette kept smiling through it, dying a little inside each time she saw her husband's face or heard his voice. She gave her everything for that man, and yet it somehow was never enough.

Sakura then died on a mission where the client lied, led straight into a trap that was meant for her by an old enemy. She watched as her death sparked a new war, her children being killed and moving on as a result.

Offered the choice to start over, to live her life in a different way with her memories, she said yes.

But something goes wrong.

She wakes up in an unfamiliar room with an unfamiliar woman calling herself her mother, in a world with strange chakra using creatures she has never seen or thought could exist.

Her own twelve year old body being the only familiar thing to her, she discovers her new life is the result of a deity screwing up her offer of a second chance, her soul being given to a being called the Creator that wanted her to live as one of Theirs, her deeds from her life having impressed them.
Much like a computer program, her soul had been rebooted, her story starting over fresh with an entirely different set of rules, her fate in her hands. It was a better deal than reliving as Haruno Sakura and possibly being stuck as Uchiha Sakura all over again.
With her memories and ability to use chakra being considered a glitch that was accepted by her new world's Creator, she journeys and makes new friends and rivals.