I like
Apollonia, very sophisticated.
But if you're NEVER going to call her anything but
Polly, I would use
Polly as the formal name.
Molly also originated as a nn for
Mary, but I think
Molly can stand alone as a name now.
"But it’s all right now.
I learned my lesson well.
You see you can’t please everyone
So you got to please yourself."
Rick Nelson,
Garden Party
"It does not become me to make myself smaller than I am." (
Edith Södergran 1891-1923)