Ya i kind off had that idea of it stopping once she has a child with ml but it's was too cruel to believe. But reading ur comment I am sure it's something like that
I'm pretty sure love never had anything to do with the curse, from the info we have it seems the curse just transfer to their first child, hence the misconception of needing love since if someone is trapped in an endless time loop they'll always end up with whoever they choose, so someone they love.
MC is just trapped for so long because Dulan is jealous and/or insane and will never recognize any of her relationship as "true love", actively getting her killed because of it.
True as well
I think this will all end if she has a child and love that child.. i think thats when the whole "love" thing becomes a concrete idea. I think Raymond loved her enough the whole 100 years so just his "love" wouldnt be the answer.
Then the curse will be transferred to her child. I really think the going back time loop is a curse atp.. and i think its heridetary unless their heir is fully capable of loving their partner and building their own family.
I think the author of the novel they're in is sick if that was the case. Imagine forcing the characters to realise his own concept of "love" instead of giving them free will. What if the characters want to be single for life? You'd keep them looping till they force themselves to fall in love? Sick.