I'm looking for my birthmother, Margaret Ann Horvath

Hi I'm looking for my birthmother, Margaret Ann Horvath. I was born Oct. 8th, 1959 in St. Louis MO. I know my birth name was Janice Louise Horvath and I was adopted from Catholic Charties in St. Louis. Any info on her or other family members would greatly be appreciated as she is a grandmother and great grandmother now. I want to tell her thank you.