I lived in Cambridge for close to 20 years, and have friends in the Framingham area. Websleuths has never come up in my "real life" though, so I don't know if they're aware of her case. It is good to know she isn't forgotten. Although that makes me really lean more towards her having left the area, or someone not local having harmed her. It seems someone would have come forward with information by now?
Worcester is so close to Framingham, and so is Springfield. I wonder if she may have headed to either of those initially, and not to the Cape? I keep returning to the comment in the linked article about how friendly Simone was, and now carbuff's mention of the older restaurant patron who said she was "so beautiful and charming, no man would have forgotten her."
It seems possible to me Simone may have had a secret life, even if it wasn't something extremely dark or troubled. She was artistic, she was musically talented, she was attractive. At least one strange guy had taken pictures of her. She hitchhiked. She had left high school. Maybe she had dreams and aspirations beyond waitressing and hanging out in the suburbs?
She was a good waitress, from what carbuff is saying. At least, she was skilled with people, pretty and socially intelligent. If she did take off on her own, I think she easily would have been able to find work waiting tables. (This is why I could see her as any of the UIDs found years later.) Maybe she headed out to California?