I wouldn't assume that women, even those substantially smaller than you, are such 'pushovers' that it's impossible to tell the difference between good and bad technique. Like Furuya-sensei once said, "It's easy to throw someone with a lot of force. Try throwing someone with no force." (For a practical standpoint, I'm assuming ... maybe rightly ... that he means not thinking of muscling, just moving smoothly in an unbendable arm kind of way and absorbing uke's energy with it.)
Not like it's easy!