Hi. I read your post and couldn't help but feel sad about your situation.
I searched the white pages for Mich. and Wisc. and came up with several people by that name, but none of them matched the age you've given. Could she possibly be in another nearby state? Have you tried searching the white pages for her? If you'd like for me to keep looking, please let me know. If you would have an idea of what state she could possibly live in, it may help. I did find a girl by that name in Detroit Michigan and her age wasn't given, but the others were older then 18. I truly hope you find your daughter and if there's anything I can do to help, please let me know.