Yeah, I'm a spoiler-free girl myself, but I read the interview when I stumbled on it and it had a few, but mostly small stuff.

I really like Bela. She kinda has Sam and Dean's number. They're almost naive when it comes to someone like Bela. I love how she gets them every time. :)
The little spoilers I read just have me excited and Lauren Cohan seems really nice. She like Zeppelin and Hendricks and thinks the soundtrack of SPN is really great! :)