I'm pretty sure she didn't get raped, but that they stole all her clothes. She's in shock both from losing her clothes and seeing the three creepy guys' dicks, thus the look on her face and the "Wiener" she's repeating. She has her tail between her legs because it's all she has left to cover her naughty bits with.
The artist really could have done more to show it wasn't a rape, but I suspect they did this deliberately to let people think that if they wanted to.