^I'm guessing that she's a fan who's stalking her and possibly bugged her phone. So she learned that the author was in a slump by listening to her phone conversation with her editor and took it upon herself in order to become her pet to give her motivation so she can write a better manuscript.
(or I might be totally wrong and she hangs around pet stores to seduce fatigued women)
Mangadex already has the second chapter. Lady is a stalker, confirmed.
I am so happy this is being updated again! That said, right now my only peeve is Mikoto's accent. She'll have no accent on the first set of pages and then BOOM, sudden accent for the next few, then back to no accent. In chapter 3 she even changes into an accent within her own thoughts!
^ My guess is they all stayed lost, since Chesha never tried to help them leave, and they eventually died of starvation or exhaustion or what-have-you.