Comment by blackrose on NotCool

Comment on ReplyNotCool
@NotCool you said it yourself. The fact that she was so ready to get on with the duchess at Chapter 2 despite her not knowing her fully means she's gullible. The Duchess is deliberately manipulating slash sending subtle signs and she's falling for it (thus, what happened in chapter 4). 

People who feel unloved would well overwhelmed when someone suddenly gives them the attention they've been yearning. It's the manipulation tactic that the Duchess used to make Lily submit to her.