Love Bites — Sienna Mercer

The twins are traveling to Transylvania in their sixth adventure

Olivia's really nervous because she's meeting her vampire family for the first time -- there's a lot at stake. Plus it doesn't help that she'll be there for Valentine's Day and her new boyfriend Jackson, the hot movie star, doesn't seem bothered that he won't be with her. But Ivy turns out to be the one who feels out of place, despire being surrounded by vampires!