Since Beth Phoenix statred hanging out with santino marella , does that mean she's turned babyface ?

Beth didn't turn, simply because she aligned with another heel. If Beth had fallen for someone like Paul London or Kofi Kingston, it would be a different story, but she fell for the biggest heel midcarder the WWE currently has. While Santino's a popular heel, and Beth has gained a lot of attention from this alignment, she's not a babyface by any means.