At the risk of veering off-topic... A lot of people battling depression, myself included, either have learned how to fake being "normal", or only have severe issues with their depression part of the time. Either way, though, just because a person seems happy doesn't necessarily mean they're actually happy. And it can be extremely hard to tell the difference, even when you're close to the person and interact with them regularly. For us, looking at Tessa? We'd never have a clue unless she opens up like she has.