The "girl" was Bea Arthur. The show was "Maude."
Bea Arthur, dead at 86.
This is probably the most famous clip from the show: Maude thinking about getting an abortion.
Added personal note: I saw Bea Arthur on Broadway in the 1960s in "Mame." I remember her sitting on a big crescent moon singing "The Man in the Moon Is a Miss." Here she is reminiscing about that scene and performing the song. [CORRECTION: Bea was singing the song, and Angela Lansbury was sitting on the moon. Sorry. It was 40 years ago. I really did see it though.]
And more generally, "everybody today is turning on":
TV in the 70s. Bizarre. That's Rock Hudson with the mustache.