I currantly have my three children 18 hours a day. I was never married to my ex girlfriend. My oldest daughter is not biologically mine. She does not know this her mother refuses to tell her. Now her mother wants to take my three children and move away. I would like to try and get partial custody but do not know my legal rights. Especially in regards to my daughter who is not biologically mine. Can anyone please help? I live in Oregon if that helps at all.