Marina Lonina, 19, was sentenced in Columbus, Ohio, on Monday after accepting a deal with the prosecution and pleading guilty to obstructing justice.
Initially, Lonina faced 40 years in prison for charges of rape , kidnap, and sexual battery – but she pleaded not guilty to all counts.
The rape of her then 17-year-old friend, who cannot be named for legal reasons, was filmed while using the social media app Periscope last February. It was spotted by friends on the app, who reported what they had seen to police.
Lonina and her friend allegedly met Raymond Gates, 29, while they were out shopping.
The next day, they went to his apartment where, according to a prosecutor, they “drank alcohol until the victim was heavily intoxicated”.
Gates then forced himself on the victim while Lonina filmed through the app.
Gates was sentenced in October to nine years in prison after pleading guilty to one count of rape in the case.
When Lonina was first arrested last year, the case was thrown into question as to weather she deserved the same punishment as Gates - despite having no physical involvement.
Initially, Lonina claimed she livestreamed the attack to help the victim.
But Lonina's attorney reportedly told the New York Times that Lonina got “caught up in the likes” and was “giggling and laughing” as she used her phone to film the February 2016 assault.
The victim was said to be clearly screaming “stop” and “no".
By agreeing to the plea bargain, Lonina admitted she failed to report the rape or to turn over evidence after it happened.