The interview really missed the mark for me. This grouping also had something break into their chat on the Mike Douglas show. I can see why some people didn't care for this grouping. Reviews for them were sometimes less than enthusiastic. Jean seems to play with the songs too much. Her voice is great bit she seems to feel constrained in a group setting. Lynda resembles Cindy when she wears her hair that way.
I can see why later Mary sang softly for mic levels, Lynda and her are too low here. You don't want all 3 at the same level but Lynda is barely audible and she is a loud singer. Mary was too low on her lead part for Where and trying too hard to add energy to this grouping.