DreadCentral has an exclusive interview with Justine (Gianna), most interestingly, they write -
“I actually liked the books but I wasn’t a crazy fan of Twilight when I got the role of Gianna,” explained Wachsberger. “I just knew though that I would be lucky to be part of such a huge franchise because I know what these stories mean to the fans.”
Wachsberger added, “Gianna was a really interesting character to portray for me. She’s human and has a lot going for her but decides to work for the vampires. You don’t really know much about her motivations and that adds a lot of mystery to her, which I really loved.”
In terms of future projects, Wachsberger is just keeping her options open and looking at expanding her resume beyond genre films. However, the actress hints that she’d definitely love to return to the world of the Twilight vampires and may get the opportunity.
“I know there’s been some talk about having the Volturi spin off into its own film separate from the Twilight series and I think that would be really cool. I think Gianna definitely has her own story to tell,” Wachsberger said."
Check out the full article here.