So, I made a little research on the updates' history.
These are the latest updates (only main quests - I didn't list the bonus scenes):
0.3.1 sep 20 - Emily
0.3.2 oct 20 - Lyvia 1st part + Tia
0.3.3 nov 20 - Lyvia 2nd part
0.3.4 dec 20 - Arianna
0.3.5 jan 21 - Katherin + Tia
0.3.6 feb 21 - Mira + the church
0.3.7 mar 21 - Penny
0.3.8 apr 21 - Bianca + Gavina
0.3.9 may 21 - John + Melissa intro + Julia
0.4.0 jun 21 - general rework update (code, mechanics)
0.4.1 jul 21 - Frisha
0.4.2 aug 21 - Liandra
0.4.3 sep 21 - Verena
0.4.4 oct 21 - Kate pregnancy
0.4.5 nov 21 - Raaisha + Rumah 1st part
0.4.6 dec 21 - Raaisha + Rumah 2nd part
0.4.7 jan 22 - Umah
0.4.8 mar 22 - Gwen + Athia + house renovation - 2 months update
0.4.9 apr 22 - Ophilia/Pia
0.5.0 jul 22 - Anya - 2 months update (delayed)
0.5.1 aug 22 (?) - the Queen + the Princess in Arenfield
NOTES:
don't ask: where is Tia? Tia was everywhere except in Arenfield's updates. She had bonus scenes very often, and she has a main role in Katherin's story and Rumah's and Umah's and a minor role in Lyvia's. Moreover she had scenes whenever MC had to fight.
4 quests were split in a 2 months span: Lyvia, Raaisha + Rumah, Athia and Anya. Anya became a 3 months update because of the Author's illness.
No main girl had more than an update in the last 2 years.
Most updates involve Rumah, the orcs, Arenfield and the forest. My opinion is that Gwen's house and Imawyn's camp were quite neglected.
----
edited