Sasha is a recurring character on 90210, the second season of the fourth series. She first meets Dixon Wilson, whom she has a relationship with in a pizza place. She is a lot older than him and he pretends that he is a famous and rich person in the music business.
One day Sasha goes over to return something to Dixon and sees him hugging his mother, Debbie Wilson. She believes Debbie is having an affair with Dixon. They meet at a spa and she finds out that Dixon is in high school and Debbie is his mother. They break up and he returns Navid Shirazi's car, which he borrowed to make his story make believe.
They break up and she comes back and tells him she is pregnant. Which is a lie. Debbie spots this immediately and Dixon is told Sasha had a miscarriage.
Dixon and Ivy Sullivan have a relationship. Ivy is a virgin as revealed by Oscar. She is ready to have sex with Dixon until Sasha comes back in the episode The Bachelors. She tells him she is HIV positive so he can check himself out. Luckily Dixon is HIV free and Sasha is never seen again.