It was probably nothing to do with you. Often times when people are having problems they look for easy targets to take it out on. She is probably a homeowner with severe financial difficulties and doesn't know how to cope.
You're probably right, sometimes you can turn a bad situation into a good one. Go buy her a small plant and knock on her door, hand it to her with a nice apology card with your business card in it. Apologize profusely, she was probably just having a bad day. Guess what, youll gain a new friend/client for life just for going back and listening....
You never really know what people are dealing with. She has probably cooled down by now and feels really bad. Try it and let us know what happens!