Hmm, so I guess there are info that only used to appear in discord channel. I never checked there before, maybe I should take a look over there as well. :)
By the way I dont think Maeve is an Etheriam, because in the girls page in the game the race is specified as follows Izanami :- Etheriam/Kitsune Tsukiko :- Etheriam/Lunar Rabbit Maeve :- Guardian Hell :- Etheriam/HellHound Considering the fact Maeve was introduced before Hell and still missing Etheriam tag in girls page should be enough proof for that.