The Queen is a card steeped in the tradition of family, and reflects a person, usually a woman, who is financially adroit, and possesses a very pragmatic, practical, nature. This person will come to your aid in some financial matter, most likely advice on how to better manage your money.
To get the full traditional meaning and interpreation of Queen Of Pentacles, I suggest you visit Trusted Tarot and their Queen Of Pentacles page.