Abigail, who had only just begun to warm to the Doctor, turns icy once again.

"Better being happy? So what you're saying is you're better than me because I'm not happy?" It's not exactly what he said, but it's certainly what Abigail heard. She has heard plenty of this kind of rhetoric in her time. Nurses and other patients telling her she was the only one holding herself back, making herself gloomy. That she was responsible, essentially, for her own misery. Often enough they packaged it up with suggestions on how to improve herself (because obviously, she must want to), with suggestions ranging from doing yoga to forgiving her father because, apparently, she wasn't allowed to stay angry.

"I hadn't realized that. I guess I ought to try to be more like you, huh?" Her words are saccharine sweet and positively dripping with sarcasm.