 She began soliciting Harry for information on wizards and odd occurrences in Chicago.The two began a romantic relationship in "Fool Moon" that unofficially ended when Susan was bitten (with intent to turn as well as feed rather than the usual just feeding) by Bianca in the third book "Grave Peril".Susan was a half-vampire (and remained so until she was overwhelmed by her emotions and urges resulting in the death of a human - see "Changes"), with enhanced strength, speed, recovery abilities, night vision, and narcotic saliva (a Red Court vampire's self-titled 'Kiss').