Mary Miller’s second story collection, “Always Happy Hour,” is now available for purchase. And while I haven’t yet read the collection, I’m excited to do so, and highly recommend. I read her debut collection, “Big World,” several years ago and found myself in both awe and envy. Her situations are usually about men and women on the verge of some shift, some new discovery in their relationship, which will alter them permanently. And while this might sound commonplace, I can assure you that her stories are anything but commonplace. Their tone, setting, and dialogue are uniquely their own, and always with a touch of humor. Take for instance the story posted here. A man and woman are on their third date at some bar…