I'd give her the death penalty - same as I would a grown man doing this to a 14 year old girl.
Goose/gander
I don't have a daughter, three sons. If a 45 year-old woman had sex with my 14 year old son and it wasn't against his will I'd want her to go to jail.
If a 45 year old man had sex with my daughter, I'd want to beat the daylights out of him and then kill him.
No rationale behind it, except the memories of being a 14 year-old boy.
