Just to be clear, you can text the main girls to get them back to their room, not yours.
I have ideas about how texting side characters will work, and it might include inviting them round, at the very least for a repeatable version of a previous scene. Not sure when that will be though.
There will be more of Mia and Emily to come! And yes, Ezri will be able to be your girlfriend in her next major scene!
Thanks for playing <3