Trouble finding a home in a buyer's market!

Hello everyone,
After 2 weeks of searching all over Charleston, James Island and John's Island for just the right home for my buyer ( I will call her lady B) I have exhausted almost every possibility I know of. I have showed her about 18 homes, driven through countless neighborhoods searching for FSBO signs, been carried away by mosquito's had my buyer's car stuck in a ditch, watched in horror as my buyer (in her golden years) run smack dab into a glass door that was so clean it was invisible to her..searched every site known to man including FSBO sites which I was sorely dissapointed in by the way..I am desperate enough to knock on doors and ask if the owner would sell their house..this sounds like a seller's market situation I realize..but this is actually a situation of a buyer ready to buy but the right home is not available :( I will keep this post going until I am successful or she has given up the fight!