I don't think she will get the "purpose of her life" through a MC. I believe that as she is rn she doesn't care about her life or death. She's just tired. She's tired of being used and abused. I think this life for her will be redemption. She will find why she's been turning back in time, the secrets of each family's power, etc. and possibly a way for her to die.
So, maybe she will start opening herself to other characters who will actually be good to her for who she is (the summer's and autumn's heads, the lady of the summer family and her cousin, for example) and will actually enjoy this life even if she doesn't realise because she's searching for a way to permanently die. So, if she ends up with the ML it will be after she has discovered all the truth and everything and she makes peace with herself and her other lives without forgetting or forgiving her family or the winter's head.
i really want her to get what she really wants, i don't feel like this should turn into a romance and then she finally gets the 'purpose of life' thanks to the mc or smth like that