That's going to be tricky but very fun, too! Because if Kain and Blythe are still together, Kain'll be her first target because he's the easiest to access. And also, he'll know that something's up if she tells him about the whole Tradition beforehand.
Still, this won't stop her from going, 'I miss you, we never talk anymore.' and as New Years gets closer: 'I miss you so much I can't stand it. Meet me at midnight in the greenhouse New Years Eve.' She'll do all that she can at that point to have a backup plan relying solely on L if everything else fails.