I know the coyote had some significance, even though the Janitor said it didn't mean anything. We know this because Sarah sees a coyote before she gets knocked out. The word coyote seems to have multiple definitions. I got a few definitions from the web site Urban Dictionary . Alot of them seem to apply to the episode. The most interesting definition was "when you wake up after a night of hard drinking and your arm is pinned under a really ugly/fat person, so you have to gnaw it of like a cayote in a trap. " Note: I got all these definitions from the urban dictionary. We clearly see the image of Sarah biting her wrist to dislocate her thumb so she can get out of the handcuffs.
In another definition "A person who is of mixed Latino and non-Latino (often caucasian) heritage. " We see this as represented by the janitor and maybe fat woman's boyfriend (I couldn't tell if they were one in the same person).
In another definition "These are the male counter parts to Cougars. Usually newly divorced you can tell this by the fact that they will use the same lines they did in the 1980's and only reference things like Sonny Crockett from Miami Vice. Typically they are a very aggressive angry sort that wants fresh meat and can be easily spotted in there members only jacket or light pastel t shirts with a blazer over it. They lurk in the clubs and will try to impress a Puma or other Naive young women into going home with them. There tactics typically include mentioning that the wife is gone, driving a nice car, and Miami Vice. They drink very non manly drinks like Michelob Ultra, Pink Squirrels, and some form of a Martini typically a Cosmo. Traveling in groups of 2 or 3 they can be seen causing a ruckus and **** about the new music that is being played. " Basically in this definition the fat woman is the coyote. She clearly 'preyed' on younger Hispanic men. Even though the definition is obviously referring to men, I assume the definition can also apply to women.
The most obvious use of the definition "A person who smuggles immigrants into America and they come from any given country for a small fee to cross into the United States. They make very good money doing it. (Average per person $1200) " . The coyote is what helped Sarah to cross from the dream world to the physical world.
There was alot of other dream imagery like that of the witch, but I'll leave it at that.