female adoptee searching born 1967

I'm looking for my full sister born in March around 1965-8. Her name at birth was Katherine Paterson. I know the birth mother's name but reserve that for inquiries

I am a female born 3/2/1967 in Hartford, CT. My adoption was also through Catholic Family Services & I believe my biological mom stayed at St. Agnes as well. I have the hospital info if you need it. Does your birth certificate read "101 Woodland Street, WEST Hartford, CT"? P.S. The hospital is only a mile down the street from the home.