Missing Sister

I am one of 5 children born to Sylvia Lasure & her long-time boyfriend, Jim Beckett. Sylvia did not keep or raise any of her children. I believe I am the youngest, & I was adopted. The oldest son was raised by other family members. A sister was raised by foster parents. One sister is still "missing," and one other child died. I now know & am close with the living brother and sister, & we would like to find the one missing sister. She was likely born between 1940 to 1945 in Charleston, WV. It is possible, however, that Sylvia left the area to give birth, so our sister could have been born in a surrounding state or city. Please make our family complete!