Hi Giggle (nice name!)
There are two types of muscle fiber type
1) Slow twitch - the kind that made me a good competitive distance runner (aerobic)
2) Fast twitch - the kind that weight lifters seek; for strength (anaerobic)
of the type (2) fibers, there are "generally" three sub types
a) moderately fast - growth signal occurs at failure around 15 reps
b) fast - growth signal occurs at failure around 10 reps
c) very fast - growth signal occurs at failure around 5 reps
Muscle fiber type 2C is also your most explosive/strongest type.
Anyways, to quantify that rep range (but not the % of body weight for women), this would occur at 15+ reps.
Again, this range is solely derived from experience and personal observation.
I wouldn't expect a male to be able to do this until after, maybe a year in the gym. But every one is different.
And no, as much as I look at the ladies in the gym, I don't have enough experience/observation to be able to make a similar generalization for you. I'd suggest either consulting with, Maybe Kawigirl might know? I know she's a personal trainer at a local gym, and has some pretty good competition experience under her belt.
Good luck!
---Roman