Actually the bruises would be inside her around the abdomen, and around her torso from where they were constricting, and holding her down. However that's not the point you jumped straight from somethings fishy to saying exactly what happened. I doubt Berma is an expert on magic, and in real life people may think of tentacles as sexual, but in D&D they are natural weapons, and are used for pulling out brains. Then Berma says that it was meant for another girl. Which was speculated outside the game to by Momo. However the truth is it was an organized scene for Inflatress because she was bored not being able to go into the forest to get the same thing.