I've finished everything except her 0.12 content
Assuming that means you completed Maria's 0.12 event line (and therefore made her a bartender), go the first floor, then to your room. If that doesn't work, try going to the second floor, then to your room.
Try that in every possible time and day, you should eventually get a warning that completing the android's storyline will lock her until the next update, and the option to keep going.