Create characters your readers want to follow through the end of your story.
20 steps to write better characters.
So your leading character, Valerie, insults her best friend, Leah, leading to her husband getting angry and shooting Valerie’s champion poodle. What? Why did he do that?
Our characters do what they are expected to do (that sometimes works) and they also do what’s not expected (that also works sometimes). Readers expect our characters to behave like real people: unpredictable, crazed, and impulsive. Or predictable, sane, and calculating. Or all of the above.