What do you think of me not believing a friend about their depression?
Why do you feel she isn't telling the truth about her depression?
She seems to be a very positive and naive person. I mean, can a person change this much in a short span of time?
Even if your friend has seemed positive in the past you don't really know what they have been going through. You should believe your friend if they say something is wrong.
I'm not convinced. I'm going to dislike her now.
Why would you choose to dislike her over this? It seems petty and wrong. As a friend you should be supportive.