The simplest(but also limited) way:Hi there
i'm playing Agrarian Skies 3.1.x actually alone on my "HomeSweetHome"-Island
actually i'm in the pretty good mid-game.
how can i arrange it, that my Girlfriend can play now together with me?
i'm not familiar with the minecraft servers yet
If you are on the same LAN network you can press ESC from inside the world and "Open up to LAN" to allow her to join. She would have to click the Multiplayer button and join the one that pops up. Of course you would have to be playing for her to play this way.
What exactly will happen with the whole HQM deal however I do not know. That is out of my expertise.