Talk less and learn to watch and listen. You will be amazed at how better your instincts become. I think her traits are what make her good at this. She doesn't

Talk less and learn to watch and listen. You will be amazed at how better your instincts become. I think her traits are what make her good at this. She doesn't like attention and is more of an introvert. These traits probably make her very good at listening and a great observer of people. Most introverts I know are very good at judging people because they don't want the attention on themselves.