Kristen Stewart upset for being more Blamed instead of Rupert Sanders

Kristen Stewart hasn't been a very happy person since she got exposed for cheating with her Snow White movie director 'Rupert Sanders'. Though she accepted her faults and apologised, she is so upset that she's the only one made to take the fall. Rupert Sanders is 44 and she is just 22, who should be blamed more?
In my opinion she's not a baby neither is she naive, obviosly more popuar than this director and has mored fan base than he does, played a key role in 'Twilight movie', one of the most sought and watched movies in the world. Hence, she gained so much popularity. What kind of reaction she was she really expecting? Rupert Sanders was just too silly for taking advantage of her like that.