(File image) Director Rupert Sanders (right) poses with cast member Kristen Stewart at an industry screening of Snow White And The Huntsman in Westwood, California, in May this year. Sanders and Stewart admitted to a recent fling after being photographed kissing and embracing in the actress's car.

The Twilight Trampire is hitting back.

Though actress Kristen Stewart has publicly shown remorse over her affair with ‘Snow White and the Huntsman’ director Rupert Sanders, sources close to the star claim that she is furious that she is taking all the heat.

According to gossip site TMZ, Stewart wants Sanders to take the fall and can’t believe that the public isn’t seeing him as the bad guy. Says TMZ’s source, Stewart’s gripe is that Sanders is much older than her and was ïn a position of power over her”.

TMZ further claims that Stewart has taken issue with being called a cheat, despite the fact that she was in a comitted relationship with Robert Pattinson at the time of her affair.

Apparently, Stewart feels Sanders is the more culpable party, since he was married, and had two children.

It is also alleged that Stewart fears her affair may have caused irreparable damage to her career – something she doesn’t believe she deserves as a 22-year-old who made one silly mistake.

Meanwhile, Pattinson may be ready to move on from the affair and give his relationship another go. According to RadarOnline, Pattinson has calmed down since the news of Stewart’s indiscretion broke.

“Rob was super angry for the first couple of weeks. Angry at Kristen for ruining what they had, angry at her for the public embarrassment, angry at Rupert [Sanders],” a source said.

“But he's starting to wind down and really think about what he's going to do regarding his relationship with Kristen. He goes back and forth...” - IOL