Your neighbor, who rejected your well intentioned comment, was not rejecting you alone, she was rejecting God. Yet, the Lord works through people in ways that do eventually bear fruit. Your neighbor probably remembers what you said, perhaps even shared the incident with others, but the seed was planted, the thought was sowed. Comes a time when the memory of your encounter will come to her mind, if the Lord prepares the soil of her heart, draws her as He has done to millions of initially Christ rejecting souls throughout the ages. Soli Deo Gloria.