Akuyaku Reijou no Mamahaha ni Tensei shita node Musume wo Shiawase ni Shimasu, Chikarazuku de. the Comic

Selene, is reincarnated into the world of a otome game. She realizes that her stepdaughter, Ati, the daughter of the marquis family she married into, is destined to become the “villainess.” But young Ati is... just like an “angel.” How could you not love such a cute child? I will protect this stepdaughter, who was abused by her stepmother and raised without love, with all my might! “I will never let this child become a villainess!”

https://www.cmoa.jp/title/343859/