Chloe dies and ends up in hell where she finds that all the demons are treating her kind of strangely. Time passes and she applies the whole punish the guilty and uphold the law mentality to hell.

Then Lucifer shows up and has Trixie with him (Trixie is Michael's daughter as per comic book plot line maybe?). The reason it took so long for him to come find her was he was looking after Trixie.

Lucifer and Chloe rule hell. Chloe then suggests they publish a set of laws on Earth so that people know what the consequences will be - even if they don't believe that they'll be enforced.