Good luck with your hunt...
Mary is a great Agent, and said she will get back with you if she happens upon something! You can count on her to do that...but do realize it is unlikely she will find any sellers willing to accept your terms.
Great question! To help you find a reputable real estate agent in your area, I recommend you check out Trulia's "Find a Pro" tool:
Agents are sorted by how active they are in the Voices Community and by the recommendations of users like you. Check it out and let me know if I can help you with anything else.
Alison Hillman, Community Manager