This was explained from the beginning. Doesn't matter what she does or tries she always dies before the year is up.
No, she’s never died from natural causes. If that were the case the ML wouldn’t have kept here isolated. He had an hypothesis and it didn’t work out so he’s going to try something else next time around.
I'm explaining why she died. Never said THEY (Karen and Raymond) knew that she would die.
People aren't getting that she got sick and died because of the curse.
Oh, got it
She have a time limit like end of year or age. He knew it but only to see her a little bit long he keep it himself.