Forgotten title/s

MC reincarnates into the villainess with white hair. She has a reputation for being obsessed with the ml with black hair. She chills down in her body, and finds the og-protagonist as a child to return him to his uncle (ml who she was obsessed with). She doesn't want it known that she found and is friends with the og-protag because ppl wld naturally assume that she did it to get closer to the ml (because of her reputation). Og-protag is so freaking adorable you just wanna squeeze his little face. Og-protag is innocently shipping ml and mc because he wants the ppl he loves to be with him more. She's also doing some subtle scheming behind the scenes so Og-protag can have a good life.

Idk if im mixing it up some details with a different one (that i also can't remember the name of) where mc has brown hair and her family is in debt, she looks for the Og-protag in a dump, she takes care of him for a few weeks because he's recovering and gets attached. When she takes protagonist to the ml, protagonist cries for her to stay, so she stays for a while then ml n mc decide on arranged marriage.