Winsett Family line

I am trying to find out the rest of my mother's family line. Up until last year we didn't know she had living family members, now I am trying to locate the rest of them.Betty Jane Winsett was born Feb 28, 1940 to her Father James (Jim) Finton Winsett jr., and _____Tubbs.James Finton Winsett's Father is James Finton Winsett Sr.Betty Jane Winsett's siblings were Vera, Barbara, Lena Mae, & Robert (that I know of).They were seperated into an orphanage as young children, so there are probably more siblings.Betty's mohter was suppose to have been indian (at least 1/2 or more) and her grandmother was full indian.
I don't have too many dates to go off of, or full names of spouses, just a few of Betty's siblings that I have been able to talk to.If anyone has any extra information I would like to get as many names as possible.Thankyou