Streaming purchased TV from a friend's account?

My house is well set up with Apple tech. My iTunes library sits on my MacBookPro and I stream media to my Apple TV (2nd Edition). Sometimes I make TV series purchases directly from my Apple TV and watch them as they are streamed from the iCloud.

I have a friend coming over, and rather than watching what I have bought we would like to stream some of her purchased TV from the iCloud to my Apple TV. Is this possible? Can I just log out of my Apple ID and log in to hers on my Apple TV?

Apple is great at converging all of my tech if it is for just 1 user, but I am not sure how good it is for multiple users in one household? I'm sure what I am asking for is not a stretching ask from my tech... is it?