Looking for sister born 1958/59

I am looking for my sister, She was born in either 1958 or 1959. Her birth name was Lula Mae. She was adopted when she was around 5 years old. Her Birth mothers name was Dorothy maxey her Birth fathers name might of been Daniels. She has 4 older brothers and one younger sister. We all have the same Mother but there is 3 or 4 different fathers. I have found all my siblings but Lula Mae. I have terminal lung cancer and would love to find her before it is to late. One of our brothers is already deceased and one is also ill like me. I have no information except that she was born in kentucky or tenn and was adopted out in Kentucky. Our birth mother was married several times. Lula Maes last name at birth could of been Daniels or brandt. Not for sure.