This is a very good explanation on this hip/leg throw called Uchi Mata. This throw is mainly used as a counter if the other person has their leg wrapped or near your throwing leg.

When you get this technique down, man you can throw someone that outweighs you by 75 lbs. One of the key to the technique is being close to the other person to use leverage. So yes, even a woman can use this throwing technique effectively. I suggest you search for a local Judo school and learn this very effective self defense technique.