Sleeping together
Despite the urge to beat the shit out of Ling Yunxiang's head, Ling Qingyu tolerated her action. Thinking deeply, no matter the situation, she was destined to meet up with her sister.
Should she even decide to stay away from the Ling family, Miss System would somehow prompt her to complete the mission.
It might be later than now, if she hadn't investigated her sister, after having met Lin Fan, and realized the arrogant behaviors of the male lead character.
Of course, Ling Qingyu never viewed this world as a book. She believed every living being was breathing and full of emotions.
The idea of being an outsider never came into her mind. Another reason why she helped Ling Yunxiang was her case of body shaming.
In order to pour dirty water, the enemies didn't consider any moral or ethical values. Now, as a woman, being wrongfully accused and vilified was horrendous.