I was never aware of her wanting to change. I agree with AndyJK (which is unusual for us, eh Andy?
) in that she went into the house to
change how she is perceived rather than how she behaves.
I don't think she is "a very unhappy person". I think she is a bit sick of the abuse she takes in the media and on the street, but it's not bad enough to make her change her lifestyle.
She will pick herelf up, dust herself off and get back to normal now that she has left the confines of that house with some of the halfwit housemates she had to endure!