first offer, verbally accepted, YEAH! But wait... she backs out

[Joe Prenger]

After going from door-to-door driving for dollars and putting notes on doors we finally were able to get an individual intrested in selling their home. We walked through the property, talked about motivation, offered a very fair price, and she verbally accepted. The next day I sent over the written contract and did not see it returned within 24 hours. The following day I received a call from the girl stating that she was no longer going to sell. Obviously being new in the realestate investment arena this is very disappointing. However, I'm back on the roads driving for dollars, knocking on doors and leaving notes for the next potential deal. Any words of wisdom, strategies, or basic advice that would close the deal in the future?