It's not clear, but Kaori's explanation of wishes, stories, faceless elves, and gold stars, may be a hint at how to bring Maya Prime back. Ami seemed to want to use whatever wishes or gold stars that she's got (if any) to bring the moon back:
Presumably, her mother is this moon (could be Maya, but I don't think Ami wants Maya Prime back), however SeKaori seemed to say that changing the past would lead to notable consequences of equal or greater value:
So, if Maya Prime does come back, in a similar way, it will likely have consequences of relative value, as well.
However, Pareidolia seemed to imply it'd bring Maya Prime back if Sensei raped Karin in Karin's 'Paranoid' Chapter 4 Event, and suggested that something else could maybe give Sensei a miracle and bring her back in Chapter 4's 'The Collector' Main Event, then Pareidolia suggested that following It is the only way to get his "girl" back, but was purposely vague about which "girl" in Chapter 4's 'On the Count of Three' Main Event.
(Of course, Pareidolia might just be talking out of it's "not even real" ass)
Overall: There is a possibility of Maya Prime's return, but it's not all that clear on what the cost might be, or how it'd work exactly.