Are my books a window into my soul?

Elysha met a person who read my first novel, Something Missing, and refuses to read any more of my books because after reading the first, she is worried that I'm a nefarious person.

I wrote a novel about a burglar who breaks into home and only steals items that wouldn't be noticed missing (and ultimately becomes a guardian angel to these homeowners), and in response to this work of fiction, this individual, who knows me and once respected me deeply as an educator, is now concerned that I am a man with criminal inclinations and a devious mind.

I had two thoughts:

1. That person is crazy.
2. Damn. Do other people read that book and reach the same conclusion? Do people think I'm a bad guy because I wrote about a professional criminal (beyond the people who thought I was a bad guy long before reading Something Missing, of course)? 

A person is crazy only until everyone else agrees with their particular brand of crazy. 

And if this is the case, what other conclusions are people drawing from my books?

Also, my next novel is not going to sit well with crazy people like this, either.