Year 4014 Mist Kingdom Main Castle
Lyn got used to her solidarity lifestyle. She got used to her family treating her like she didn't exist most of the time and simply passed any meetings with them with equally the same amount of indifference. It was easy for her to act indifferent. She did not know them. Even if they knew things about her, she knew nothing about any of her family members outside her younger sister.
It wasn't until she met Kazuya did Lyn realize something was wrong about the situation. However, even then Lyn didn't want to over-think it and continued remaining indifferent regarding the case.
But when even Rhys pointed it out, whatever walls she built vanished completely. Lyn felt her first brother's watchful gaze on her during the beginning of the meal. Coming in together was awkward enough, let alone him still looking at her. Isn't it fine already? She already answered all his questions.