This is honestly terrible, probably deserves 1 star instead of 2. (Update. I just downgraded it to 1 star, which is goodreadsish for "did not like it". If I'm going to give good books ratings of "I liked it" and very good books "I loved it" then gosh darn it, this book was not "it was okay".) 
 Black Wings commits so many crimes against writing that I struggle to express them all. The super-special heroine becomes even *more* super special a few chapters into the book, while surrounded by shockingly good looking guys, a non-human loyal sidekick with no inner life, and another human loyal sidekick (the gay best friend) who is fridged (very very early in the book, not really a spoiler) and she barely reacts except to use his fridging as an excuse to resent dark forces. Dude is your best friend in the whole world, and you don't even lose a day to shock and grief, especially since the "main" plot hasn't kicked in yet. 
 What this book really needed was less. Less happening, less special special world building, less cutesy urban protagonist. There's no real heart here, no real character development, no real editing or focus. 
 I picked this one up at Amazon rather than going through the library because of the good reviews and some "if you liked this (Grave Witch) you might like this (Black Wings)" rec. If I were the kind who actually returned books, this would be one I returned. (I don't. I treat them like movies. Sometimes you end up seeing lemons. No refunds.)