Found a continuity error. As part of Android's event chain, we went to visit Kali at university (Where Android hacks all the students laptops). Much later, after the end of Android's current last event, I finally got an event for Kali first day of university. And I realised that this is where I was supposed to learn about these new characters i the first place.
Viewing post in Harem Hotel v0.13 Patch Notes comments
i ran into similar issues with Maria's story. the issue would be that you can progress each girls story independently up to a certain point, and the flags for future events with each girl are set to the wrong point in another girls story. honestly, with how many storylines are here, this is very easy to notice, but can be difficult to set appropriate flags for triggering events due to the interweaving of storylines and picking the correct spot for each individual flag. due to this game being a WIP, this is understandable.
hopefully the dev is able to go back and polish some of the older content in future releases, but I'll be honest, it's going to be a TON of work, and is going to take a huge amount of time to go through all of the coding. it wouldnt surprise me at all if the dev is either unwilling or unable to get everything nailed down perfectly, and wouldnt bother me if he didnt. its just odd seeing a girl you don't currently have access to randomly showing up in other girls storylines out of nowhere.