I believe the same. That was a small cramped shower, no one is going to sit in it. Especially to take pictures even if its for the sexiness of it all, or to prove your weight loss. It wouldn't be sexy or show your weight loss, your body would be scrunched up. I think he more or less sat down either because she forced him to with a knife or gun, or because he was plain sick and tired and didn't know what to do.
For her to think that its believable that she took pictures of him in the shower with the door open, he sat down on the shower floor with the water still running and was showing him pictures? Water would be splashing all over his brand new camera. Why would he do that? It makes no sense.
Its my belief that she either showed him the gun or the knife at that point and took a photo of his face on purpose. He's looking wide eyed directly in the camera, and he looks pretty scared. I think she then attacked him with the knife...
Yes. And you know what? Travis would have instinctively wanted to get out that small enclosure once he knew she was armed but what could he do? He sat there when SHE threatened his life hoping he could talk her out of it or something. He had no choice. He was like a lamb before slaughter. That is what the last photo depicts. He suffered in every way possible. I've never come across anybody as sinister. And nothing less than death will do as the penalty.