What exactly is Anushka's role in PK

The story of PK was leaked but no body had any clue about Anushka's role. Now that is leaked. She is playing the role of a journalist who reports on weird happenings. She comes to India to interview PK who is an alien. The movie shows that Anushka is in love with Sushant Singh Rajput, but they have many hurdles on the way. Other source say that she plays a prostitute. PK will be a super hit, is no wild guess as the deadly combo of Aamir Khan and Raj Kumar Hirani is sure to win. Interestingly though the film is scheduled to be released in December the buzz around the film is well-built. The first poster received lots of bouquets and brickbats. The second one was a total contrast to the first one. While the first showed Aamir full Monty, the second saw him fully dressed. Now the third poster is about to come and so much speculations are rife.