Shen Biran may still think about Gu Qingyuan's kindness to her, but this kindness has actually thoroughly affected the normal relationship between them, and also makes it impossible for her to take action against Gu Qingyuan.
Not being able to act against Gu Qingyuan would cause many troubles, and these troubles furthermore would cause a significant impact, making all of them realize that Shen Biran also has weaknesses, and Gu Qingyuan is his weakness.
Deliberately considering these things, naturally one shouldn't think about why this is the case anymore.
Yet Shen Biran always has to take Gu Qingyuan into account, and she also needs to let Gu Qingyuan understand that he really shouldn't be thinking so much.
What role will Gu Qingyuan play in Lu Xiao's plan? I fear any role wouldn't be something he can handle alone.
If he can consider these issues now, that's naturally good, but if he can't think about these issues, then he won't be able to consider other issues.
