Is Vanellope Von Schweetz Jewish?

Vanellope Von Schweetz (what's with that name?) is not implicitly Jewish, so who better to ask that her voice actress (and complete lookalike), Sarah Silverman? "I say she is [Jewish]. Nobody has said no. So, yeah." Who's going to refute it? Not us! Wreck-It Ralph's screenwriter and its recent sequel's director Phil…