The Great Plains and Other Tales

In The Great Plains, Katie Schmidt thinks she is ordinary but is far from it. To change her fortunes she decides to get false fingernails, brighter teeth and even a new nose. This attracts a man named Cam however she cannot impress him beyond his coming to live with her.
When Cam is out all night shooting pool and not helping with the bills, Katie begins to get disillusioned and is open to compliments from anyone.
Can an awkward clerk, Horace O'Leary, the great, great, great grandson of the cow owner whose source of milk started the Great Chicago Fire point Katie in the right direction?