I would rather read Kelly Link than breathe. Writing about her is another thing again. I do not know why her new book is called Get In Trouble. I can think of lots of possible reasons. I don't suppose it's really a fragmentary warning to over-confident reviewers but, then again, this is Kelly Link.
There are writers who are very difficult to describe. Most of them are bad writers, and they're hard to describe in the same way that fog is hard to sculpt: any precise account you give of their work makes them sound less diffuse and more competent than they are.
Link is hard to describe in the way jazz might be if you had never heard it before. Or even heard of it, or thought of anyone attempting anything like it. She's quicksilver, whimsical, impossible to pin down. She knows what she's doing. She doesn't necessarily want you to know.
Link writes short stories. This is her third collection, not counting 2008's Pretty Monsters, which was aimed at young adults and contained several stories from her two earlier books. (But most of its stories were new; and they were all as sophisticated and elusive and engaging as her non-YA material. So maybe this should be considered her fourth collection. Even the maths of Link criticism is problematic.)
The new stories feature pocket universes, steampunk fairies, androids, mummies, ghosts. They are fantasy, but not really; science fiction, but not really; definitely not postmodern, except sometimes; in no way whatsoever magic realist, except for people who use that term to mean "speculative fiction, but I prefer not to admit I enjoy that stuff".