I need some help in finding my mom. Her name is Frances Rodriguez, and she was born in Arizona.?

She is probably 60 or 61 years old, and has a daughter named Christina, a son named Michael who is probably 41 and a son named Bobby. We were seperated when I was a few months old, and my aunt on my fathers side raised me. I think that my sisters name is Christina Lara, and she was raised by her Aunt Angie in Sylmar, Pacoima or San Fernando. The last time I saw my mom was when I was 5 years old. And now that my dad has passed away, I have no way of knowing how to find her. Is it possible to get some help without having to pay money...? I have 6 kids of my own and would like them to know where they come from and at the sane time find out where I come from. Any help would be appreciated...