So I have a new roommate. I'll try to recap this quickly.
April: When my old never-actually-slept-here roommate moved out, my landlord decided to not re-rent the room. They used it for storage over the summer.
Mid-September: Finances are tight upstairs (for my landlord) so she decided to see if she could find someone to take the room. She posted an ad on Craigslist specifiying "female preferred" but only got replies from guys. She asked my opinion and I expressed my reluctance to live with a strange guy. She understood and agreed but was getting really stressed out. She set up meetings with a few of them and in that time actually got some replies from girls so she brought them in first.
One of the girls moved in last night. I honestly have hardly talked to her and I still haven't figured out how to pronounce her name. She's a PhD student from somewhere in the middle east (Iraq or Iran I think). She seems nice and quiet. It's weird to have someone living here again but I feel like it will work well.
It was a bit stressful going through all the "possibilities" and getting updates all the time but I am thankful for the outcome.