I don't think she could have been brought back by anyone there, but what I'll point out is that it's really disturbing that as Maya dies, Ayane (her substitute) is wearing Maya clothes, Maya's bell, is surrounded by blueish flowers (and Maya's turning into one) when Himawari (?) said that you can trust blue during the "Ami gets lost in the old district" event, and Pareidolia is looking at all of this from a freaking sunflower, which is what Himawari is.
It's really disturbing as the whole scene seems to point out Ayane taking over as a "new Maya/guide". I hadn't looked at it from this angle before.
It doesn't help that Yasu suggested that replacing Maya is what Ayane wanted:
And recently, Sensei seemed to think that's what Ayane is trying to do:
Ayane also did and said things like this right before Halloween:
With her suggesting she's trying to emulate the other girls so that Sensei doesn't go to them.
Then there's how dressing up as Maya (which more or less was the catalyst of Sensei's issues that night) for Halloween was mostly Ayane's idea, with even Sana having a wardrobe of Maya's, thanks to Ayane, and on top of this, going to Karaoke was seemingly Ayane's idea as well, and Halloween was at Ayane's mansion.
Overall: She's probably the most suspicious girl in the game to me.
Doesn't help that even the class card which was given to Sensei by Paper Ami in Paper City, was apparently suggested to Ayane by Chika, but ultimately given to Sensei by Ayane, just without the rest of the class involved. The class card became an Ayane card.
Paper City Ayane was also unstoppable, while everyone else died. A lot about Ayane since she met the Shapeshifter, has been concerning, imo.