Why an angel falls for her

Antoinette had lost her zest for life when her sister died six years ago, she decided to end her misery but instead got swept up in the arms of an angel so sinfully handsome he made her breathless. Too bad because,the arrogant, brooding arch angel wants nothing to with her, except hand her to the reaper.
His name is Ashruiel and he is tasked of watching over her and protecting her from the dark demons who are after her soul. While they are both struggling to fight the evil forces, they also encounter their most unexpected foe: the feelings of desire and love that had grown deeper between them.