Thanks Lovetodream88 and gracielove! It just seems so strange! When I first got her, she wanted to meet everyone and now she is weary of everyone. She even barks at little kids. I thought that may be I should just start trying to introduce her to more new people and little kids? This way she learns to like people?
Also, she seems frightened of my neighbor and she knows my neighbor. She met my neighbor the first day I brought her home.
She does really great with other dogs though. Yesterday she met an Italian Greyhound and they were instant friends. She even laid down on her back and gave him her belly.