How can we get our daughter Angela back from my wife's sister?

My wife Kim's sister Billie Jo kidnapped our daughter Angela out of here in California to Ohio. Billie Jo lied to social worker about us to abuse Angela. Social worker let Billie Jo to adopt Angela and Judge let Angela to stay with Billie Jo in Ohio. Kim and I cant afford any lawyer to help me to get Angela back. Angela is not real happy to stay in Ohio with Billie Jo who uses drugs and smoking. Kim and I are clean and never use drugs and never smoke. Kim is very sweet and deaf. Billie Jo called her dumb and deaf. Billie Jo taught Angela many bad words. We worry about Angela very much. She skipped many grades in Ohio since 3 years. We still wait her back with me here in California. Please help me how can we get Angela back?