I watched this episode -- actually, I should say these episodes -- last night.
[spoiler]Adam has Carolyn locked in the room with him, he throws the key on the floor when she asks for it, and then he grabs her when she tries to get it and holds her by the arms. The two are on their knees and he is forcibly kissing her when the scene cuts away. That's the last image we have the two of them together before the episode ends. The next episode begins with Carolyn walking downstairs to call Prof. Stokes. She's visibly upset, and her hair is messed up. It's a definite hair/wardrobe decision, not some incidental carryover from the previous scene.[/spoiler]
I think it's possible to read the scene either way, though the important point is that Carolyn is now terrified to be alone with Adam because he has forced himself on her (to whatever degree) after being told repeatedly that she isn't interested. Either way, there is a physical violation involved.
Frankly, what disturbs me more after watching it is the extent to which she continues to sympathize with Adam, but I never quite understood that whole situation in the first place.