She's American.
She was in an incarnation of 5th Dimension in 1978 and later sang on cruise ships, where, by all accounts, she was a prone to be bit shirty if she didn't get the applause she thought she deserved.
She was also on album called New Directions with Jazz singer Bobby Wade. Not sure where she was born but if it was North Carolina, the girl second from left could be her around 1965/66.
Godz