You need 85 Fit and 85 Cha, and I won the fight in the previous event. (The rock paper scissors fight). She said that since she lost she would meet me at the Grove at night.
I figured it out. Keep giving Coffee to Sophia at the college at night. After you give her coffee a few times you'll unlock the Hospital. Keep following that quest to unlock the sleeping pills.
I'm also trying to figure this out. The most I can find is that you need to unlock the Hospital as a location, then buy sleeping pills from a drug dealer in the alley. Idk how to do any of that yet.