I can't find any information about whether Amy Fandel's front teeth had grown in by the time she disappeared. They're missing in her photo, and the child in this photo appears to have front teeth:
http://cnnnancygrace.files.wordpress.com/2010/03/00263.jpg
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Donjeta, in post #547 you asked if these three girls were the same:
Blonde holding headphones:
http://cnnnancygrace.files.wordpress.com/2010/03/00751.jpg
Blonde in green velour dress sitting by luggage:
http://cnnnancygrace.files.wordpress.com/2010/03/00801.jpg
Nude blonde wearing necklace on blue sheet:
http://seattletimes.nwsource.com/ABPub/2010/03/11/2011323439.jpg
I'm not sure the nude girl is the same. Her eyelashes look thicker and her hair looks shorter. Also, the nude girl is seated on a bed and the girl with the white shirt is sitting on a brown rug, and the stuff on the table behind them in both pictures looks significantly rearranged. I think the pictures might have been taken some time apart, with some room rearrangement happening in the meantime.
One thing's for sure, Alcala had a fetish for photograhing girls, mostly topless, wearing his headphones. He also uses that blue sheet frequently as a backdrop. Though I hope he didn't, it crossed my mind that he might have had some kind of sick code where anyone who put on his headphones would be victimized.
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That ledge I mistakenly called a headboard definitely is a fireplace mantel. You can even see the edge of it in this photo:
http://cnnnancygrace.files.wordpress.com/2010/03/01201.jpg
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While this is the same apartment, notice the pictures on the wall, specifically the Madonna & Child:
http://seattletimes.nwsource.com/html/photogalleries/localnews2011323273/23.html
...have moved, and the clock, Bosch painting and others are in their places:
http://cnnnancygrace.files.wordpress.com/2010/03/01431.jpg
So I suspect they weren't taken the same day.
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This girl's white necklace is a puka shell necklace. My dad said everyone, guys and girls alike, had them in the Seventies.
http://cnnnancygrace.files.wordpress.com/2010/03/02071.jpg
Pic for reference:
http://www.dandlcreations.com/neck_70supka_sharksdark.jpg
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I've always thought this subject was a woman. She has no Adam's Apple:
http://cnnnancygrace.files.wordpress.com/2010/03/02081.jpg
http://cnnnancygrace.files.wordpress.com/2010/03/02091.jpg
She does look distressed in that second photo, and not exactly thrilled to be photographed in the first. I wonder if he asked her to pull her blouse down, exposing her shoulder, and then he asked to take more provocative photos and she emphatically said no, hence her expression in the second picture. That's just my two cents.