To get her pregnant, you need the double fertility potion and drink with the wine merchant when he is at the tavern. Just make sure to use a cure potion before walking up to the table.
I'm actually referring to what happens to Alice
after she becomes pregnant and moves to the temple.
In an early version of the game, after spending a certain period of time at the temple, Alice could become an acolyte (= instead of wearing the blue 'novice' gown at the temple, she wore the white 'acolyte' gown, just like Ziva and Caleah). There was even an associated scene at the temple altar.
After this altar scene, if you pulled the rope in your room in the temple, Alice would appear together with Ziva and Caleah in your room for the 'QC session.'
No matter how many times I've restarted the game, I have never again been able to trigger this event.
Perhaps it was removed from the game during an update?