Personally, lovely Aries, I would tell you to take it as a compliment. I think Hollywood has fashioned our collective consciousnesses to assume prostitutes look cheap and tawdry. Much unlike yourself. I think we tend to think of prostitutes as strung-out and wasted, wearing age-inappropriate clothing and way-too-much blue eyeshadow.
You, on the other hand, look classy, neat, all-together and (need I say?), pretty. I don't think people expect that, and aren't prepared for it. I think it goes without saying that you, and your sisters, break the stereotypes surrounding your profession. Indeed, few, if any, match the stereotypes that are built by Hollywood.
Next time you see that young lady, be kind ... she is probably still in shock. But she will probably speak highly of you, and of her experiences with you, for years to come.