I've seen girls with 'bat drag' hit bombs but, against faster pitchers that 'long' swing becomes a problem.Girl #1 - Weight 125lbs, Bat Speed at Impact 63mph, Best Hits 245'
Girl #2 - Weight 170lbs, Bat Speed at Impact 71mph, Best Hits 215'
There was/is an occasional poster on this site who taught 'power vee' at contact and claimed high bat speed using a radar gun.
Just 'throwing' out my guess.