So one of the PCs in my group is an Ifrit Wishcrafter Sorcerer who also happens to be a Harrow reader. Needless to say, she's the one who received the Cyclone card when Eloais's cart went up in flames upon their arrival, and after getting the fire put out and the rest of the opening scene under control, she sat down to do a Harrow reading while the rest of the party talked to the NPCs or scouted out into the nearby cactus forest.
Lacking an actual Harrow Deck of my own, I got her results by rolling d100 and rerolling any results over 54, then just counting down the list on the Pathfinder Wiki.
The Paladin (LG, Str) - lawful good card of strength. It represents standing resolutely against trouble, without backing down.
The Queen Mother (LN, Wis) - lawful neutral card of wisdom. This formian is the personification of knowledge, who is fond of the powerless, the underclass, and those who will show her obeisance.
The Betrayal (NE, Cha) - neutral evil card of charisma. It represents selfishness and envy.
The Idiot (NE, Int) - neutral evil card of intelligence. It represents folly, greed, blackmail, bribery, or hubris.
The Carnival (CN, Wis) - chaotic neutral card of wisdom. It represents illusions and false dreams.
The Snakebite (CE, Int) - chaotic evil card of intelligence. It represents poison, venom, assassination, and discord.
The Fiend (LE, Str) - lawful evil card of strength. It is a devil that devours the masses of the innocent, and can represent the deaths of many in a disaster.
The Midwife (NG, Wis) - neutral good card of wisdom. It represents the enabler or conduit of new creation, information, or arrivals.
The Demon's Lantern (CE, Dex) - chaotic evil card of dexterity. It represents an impossible situation of traps, mind tricks, and sleight of hand.
[9:22:23 PM] Belladonna: Present: Greed, folly, blackmail, pride / illusions, false dreams /poison, assassination, discord. Someone, perhaps the paladin from the past?, is deluded by their pride and ends up part of a plot to create discord.
[9:25:54 PM] Belladonna: Future: deaths in a disaster, masses of innocent / new creation, information, arrivals / impossible situation of traps, mind tricks, sleight of hand. This force will cause a great number of deaths and a large disaster, impossible to avoid, however something better may rise from the ruins of the devastation.
Looking not far from the mark, but just enough off to keep things interesting. =)
I'd like to allow her to keep the Harrow readings as a major part of her character and incorporate them more into the adventure as possible. As written, they really only make a direct appearance during scenes related to Eloais's death at the beginning; once the pugwampis have been found and dealt with, I don't recall the adventure ever making much of a deal of Eloais's ill-fated divinations, the repeated presence of the Cyclone, and so forth ever again.