Used her child as a reason for a lower rate on a completely unnecessary purchase. A wise man once said - “Don’t use your children like that, it’s shameful”
Just have to roll with it man. Play into it. "I must be allergic to sexy women" "Don't worry, if we keep talking eventually the blood will go downstairs" Eventually you'll stop having this physiological reaction. Like so many other aspects of game, this one requires exposure and time to conquer.