Shen Biran didn't want to trouble others, but if she kept at it, she would only trouble herself.
Because she couldn't trouble others, she would rather trouble herself.
Shen Biran just didn't want to face them because she couldn't bring herself to act against them.
If she did act against them, Shen Biran would be the one paying the price in guilt and suffering.
She was the one truly hurt, yet he was unwilling to act against those people now, as he felt bewildered during this time.
Shen Biran always had to decide based on her own perspective, but if it was truly a problem, then whatever they did would be redundant.
Shen Biran couldn't bear to act against Lu Xiao, but if she didn't act against him, there might be more issues in the future.
Don't be fooled by Lu Xiao's nonchalant attitude now; in the future, he'll realize that making him a pawn may end up hurting someone, and it won't necessarily be him.
