So, if you already f.ed up, you only can erase data and start all over. If not, go to 3rd floor to empty room. There is portal to complete her quest
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I got Faith
Judy - Go to sunflower city, find the note on the ground with the code to the door and open it, there you will find her
Tall Wendy - Go to Asylum and enter in the code to the "Sex Room" and there you will find her. The code is on another thread, cant remember it. the thread is marked as "saferoom code" or something.