You're only missing Stella, which is a cam girl that you meet by browsing the Internet at home. If you missed her is because 1) you haven't unlocked the Internet completing Yadira's quest, 2) even if you have, you haven't gone home, turned on the PC and browsed Sickcams on Internet Explorer, or 3) even if you have done both things in the right tempos and after seeing an icon at your home indicating that there was a mission there, Wonderstella is not online when you're on Sickcams (if she is, please, just click on her
).
I'm quite sure there's no possibility that there is a bug with Stella but, if you're sure that your case is the 3rd one that I mentioned, it'd be great if you could be more specific. Tell me if you unlocked the Internet, if you browsed the Internet and things like that.
Other than that, you're not missing anything else. You can't go to the asylum properly; you can't click on the asylum tag on the map and go there at your will, but you go by force at the end of the version. Maybe it's a design flaw to give the player the specific location of the asylum and a physic button to click in, I'll give you that. But you did finish the version, don't worry.
Also, I want to clarify that this point of the game is not linear, and you can follow several paths in several orders before getting caught and brought to the asylum. That's why the last thing you did is going to Alice and the last thing
Jmasb is going to Heather.