How can I get in contact with my biological mother?

[Vic Rattlehead]

I am 21 years old, searching for my biological mother. I know her full name, and that she is most likely living in my current town. I know she moved back to this town a couple years ago to take care of my [schizophrenic] older brother. I have spent unreasonable amounts of time searching the internet for any possible contact information, I have found no such information. Every people finding site is a scam, and my mother hasn't used her Facebook profile in over a year. Does anyone know of any possible way that I can find my mother in my town [without being scammed]? I thought about using Craigslist, but I have no idea in what category I would even post an ad for that. The personal category seems to only be about "getting laid". Any helpful advice is appreciated.