Anyone who knows????

So it’s about a child (girl) with pink hair?? and she have father and brothers i think there’s 3 of them and i think she’s a princess. Her mother ran away taking her and she died?? And the most important thing that I remember that can set this apart from other manhwa with same genre is that she thinks that she reincarnation and become her mother’s child again but the truth is she’s just back to being young(?) and yeah only her but not everyone around her(?) and I think she was found in a snowy forest by her father... oh and also I think she’s sick or what that’s why she’s in a situation like that (like being back young)

Sorry this is so unorganized, I really don’t remember much about it so yh :< if anyone knows pls helppp