This appears to be White Quartz Wielder, which runs to the left of Blood Guard and Cording Traverse, which use the thin finger crack in the two roofs clearly in the picture. It is rated at 5.8 PG, but I'd call it 5.7.
Though I'm not an expert on the area, this was definitely well to the right of the two you mention and a short distance left of A Flake Called Lee. We were pretty sure it matched up with the photo showing Seven Wishes in the Eric Horst book. So while I can't say I am 100% certain this is Seven Wishes, I am 100% certain it's not left of Cording and Blood Guard unless the Horst book has everything all wrong.
I would also not call myself an expert on the area, but your book must be wrong. Using Indy's (Mark Kochte) Climb Maryland! book and mountainproject.com, this perfectly matches to White Quartz Wielder. Besides not matching up with Indy's photo for Seven Wishes, it also doesn't match the description: "Wish it were 5.7! Starting 50 fett to the right of Bloodguard, climb through an initial overhang in a wide chimney to a platform 10 feet up, then follow the notch and crack to the right of the imposing Rhythm Roof to the top, trying not to step too far to the right." Vs. the route description for WQW: "This is the obvious, wide crack/chimney on the left side of the rock, to left of Bloodguard. Clamber up the crack then pull the roof to the right of the small crack under roof."
I'll get home in two days and will study my book and MP carefully. It could be my memory was faulty when I went back and looked at pictures. And although I doubt the book is wrong, that could be the case too.