Thanks for the chapter!
I'm start to fear for bunny-girl and Diana... as so far there was no any happy-ending for anyone linked with main-character (Jill... never forget)... exept may be Myo Nelson who died grayhaired by natural death...
@I don't believe it was ever confirmed that Anne was Fiona's clone. Or at least not yet (I haven't read far enough ahead to know either).
The author hasn't even told us how Anne knows Ayni in the first place. Although, if you look back at this page from Hero - Part 6, it's implied that Anne came here, in part, because of Ayni.@
Are you sure that Ayni is the sister of "Anne's original"? She was never mentioned before, and (may be i'm wrong) Fiona's blindless was implemented to be after-effect of the E33's BF falling by Milo's hand (as the foundation of his orphanage) not family-linked desease. Moreover Fiona was 17 when she died at 401-th (https://s1.mangadex.org/data/ed7c6e9cf435e99236b8c5e8ccfedfa5/x10.jpg). Now its +- 432-th. If there was not much age difference between sisters Ayni shall be near 40 (and she doesn't look like it exept being ageless).
When i was reading the chapter i thought that Ayni is the "sister" of the "original" chimera but your comment is gorgeous and leads to another kind of foreshadowing...
The most important question, i think, is: "Does Anne know that she is the daughter of Pray and about Fiona's background?"