So every now and then, Maria will show up in MC's room asking if they want to spend the night then have sex. I played the previous release Xtra and it seemed she appeared randomly twice. In a new playthrough in the newest version, she did it again right after MC story date night with Sarah. I managed to record the time in new playhtrough (don't know about old): Day 60, 00:04 hours, Thursday.
In my old playthrough, I had completed her quest and joined Dragunovs.
In new playthrough, I had completed Rachel quest, done Maria quest up to where we talk to her boss at the labs after telling her that Dad was going to fuck her over, and just finished story date night with Sarah.
Does anyone know what the triggers are for her to appear in MC room?