It's were two girl Reincarnated and on of the girls was the bullie of the fl that also Reincarnated with her and the two became sisters and the fl gets revenge of the bullie that Reincarnated with her and became her sister
This maybe? https://www.mangago.zone/read-manga/even_though_i_m_the_villainess_i_ll_become_the_heroine/
It's were two girl Reincarnated and on of the girls was the bullie of the fl that also Reincarnated with her and the two became sisters and the fl gets revenge of the bullie that Reincarnated with her and became her sister