Responses
They're novels, not manhuas. But I think they're pretty enjoyable:
https://www.novelupdates.com/series/i-raised-cinderella-preciously/
https://www.novelupdates.com/series/i-raised-a-black-dragon/
https://www.novelupdates.com/series/the-baby-isnt-yours/
Promo webtoons:
http://www.mangago.zone/read-manga/i_became_the_black_swan_mother_of_the_white_swan_princess/
http://www.mangago.zone/read-manga/the_baby_isn_t_yours/
I really like the stories where the person reincarnated is made into the mother of a character of the novel or something similar to “ I became the villain’s mother “ so I was hoping someone could help me find something similar! Anything is amazing!!