As you get to know her, you might call to ask her advice about something you're working on. She seeks you out at the next technical conference and introduces you to her associates. You learn all about one another's work, interests and goals. You help one another solve problems that arise in your work. Well, this is how they are created.
People trust other people they know.
It took an investment of real effort. You trust people who have made that kind of investment. They're the kinds of people you love to hire. This is called living and working together. It's called building trust and making friends.