Book Review: Evelina by Tim Pearsall

Synopsis from Amazon:

Evelina is a mutation. Some would say an abomination. Created by Pagan magic at the death of Christ she feeds on the suffering of others, and her curse is longevity. 
She tramples down the ages with revenge on her mind, drawn to the miseries of mankind, where there is war and suffering you will find her. At times a warrior, a mercenary, an assassin, a whore.
In modern London, Evelina tangles with an ordinary young couple and their lives are changed forever. The huntres...