Blythe didn't seem like she wanted anything from Laura. She was always so kind and caring and never brought anything up about owing her. So then why did Laura feel like she did?
Blythe was out foraging, making sure Laura had plenty to eat. Blythe always did everything she could to keep Laura happy, she didn't deserve someone like her.
How could she make it up to her? She needed to find some way. Admittedly, she only could really think of one thing. But, it was worth a shot. She waited until Blythe was back before coming up to her.