Stolen, Raised in Poverty, Aced Her Way Back!

She was five when she was taken. For the next thirteen years she kept studying without anyone around her knowing, and she came back to her birth family as the top science student in the province. The family had brought up another girl while she was gone, and that daughter set about getting rid of her. The family's business rivals had their own reasons to move against her, and some of what was arranged for her was meant to kill. She went into research on new energy and worked on solid state batteries with the people she partnered with. Stories were put about concerning her while she was doing it. She spent as much time unpicking the arrangements against her and keeping her family out of range as she did on the work itself.