Blood Coven vampire novels

After their parents' shocking revelation about their fae heritage and an attack on their lives, the McDonald twins are forced to hide out deep in the Swiss Alps at Riverdale Academy, a secret vampire slayer training facility. And with no way to contact their vampire boyfriends for rescue, they're going to have to play nice with the locals. But when Sunny starts acting strange, Rayne realizes that there's more to fear at Riverdale than getting staked...

Sunny McDonald and her vampire boyfriend, Magnus, are on the run-accused of treason and wanted alive . . . or undead. And her twin is the slayer sent to track them down. Rayne would do anything to save her twin sister, Sunny, from the Vampire Consortium dictator who wants her dead. Instead, she's been commissioned by Slayer Inc. to find Sunny and Magnus and deliver them to the Consortium . . . which Rayne knows means certain death. She also knows...