not as fast as a man
A 10 year old girl should pitch about 40-55mph.
A 12 year old girl should be anywhere from 40-47mph.
i know a girl that can pitch a softball 65 mph. she is 13 years old
35 mph would be about average.
Honestly, It depends on the girl. Some don't even pitch 40, while others pitch nearly 60.
Yes there is a pro fast pitch league. The league is NPF, National Pro Fast pitch.
Usually about 60-75 mph.
there are many types of ways to play softball. there is slow pitch and fast pitch. tee ball and coach pitch but fast pitch is where they go in a hole wind up and pitch the ball to the hitter.
start off slow then gradually go faster for more fun ;)
a fast ball