And speaking as a guy who has been known to be bullheaded on occasion, I'd appreciate being told how you want to train, verbally or otherwise. The woman Katherine mentioned upthread, if I have the right one, never leaves you in any doubt that she's ready to take whatever you dish.
I think you might be thinking of someone else.... The woman I was thinking of (Beth F.) had dark hair and may have been before your time. Same idea, though. She put me under the mat a couple of times...
Edit: On further reflection, I think I do know who you mean. Sounds like she's really come into her own the last few years. Yay!
But in any case... in my own experience, I've found that guys generally get the picture pretty fast once I attack them.