Meg Wolitzer presents three stories about the tricky subject of envy that question whether the grass is in fact always greener somewhere else.In Alexandra Petri’s “Seneca Falls for You,” feminist Elizabeth Cady Stanton almost gets trapped in a romance novel.The reader is Ophira Eisenberg.  Ben Phillipe’s sly fairy tale, “The Luck of Others,” read by Joanna Gleason, reminds us to beware of what we wish for.  And a small town charity auction surfaces envy and confusion in George Saunders’ “Al Roosten,” read by Tony Hale.