I don't look to Mr. Roeder for great writing, but rather for a story with well defined characters and unusual or compelling plot development. He does a good job with fleshing out his characters in the Vampire's Heart. But the crucial point for me is that he employs a MC of 13 years old. The undersized, bullied teen male is pretty much a stock character. However, we're pushing the boundaries when a boy so young is asked to display romantic and sexual longing of this intensity. Certain reactions on his part seem the stuff of melodrama and shock devices.
This is a quick read, easily done in one sitting. It could also have been done by a somewhat gifted high school student.