She provides juice for him. He wanted to reject it but his body responded differently. But he might have denied it, the juice was good and he liked it, it's just that he was in a bad mood and that made him dislike anything she brought.
When she woke up to leave, Seth asked, "Where is your tail?" Instead of asking her normal or important questions, he went to the foolish one.
But Seth has a reason for that, he assumed she will not tell him the truth even if he asks. He might as well annoy her.
"I do not have a tail now!" She whispered as she looked away.
"You do have a tail when you are that hideous monster. Now that you're a beautiful monster you cut it off?"
"That wasn't me. I was malformed because I'm incapable of supporting evolution!" Her answers were soft and innocent.
"It doesn't matter. So you do have a tail?"