iso adopted female sib/denver/st joseph's/1961-62?

I am searching for a sibling that was adopted- i think female. I think she was born in either late 1961 or 1962. Born in Denver - st joseph's hospital. Mother was about 18 years old. Gave birth alone. I think it was during the warmer months.... if you think you might be a possiblity , please write. Thanks!!