There is a change in her personality since X factor .
She used to be bubbly and confident (over confident) and tried hard to be different.

Now she seems like she is on the edge and very quiet, eager to please and nothing like her X factor days.

Still can't believe she knocked out Aiden Grimshaw of X factor

From what i could gather is that she was doing well in America (for herself), maybe coming back to English TV was not a great idea....but when you see that cheque rolling in....

I liked her until tonight 😀

She's just expressing her love of World of Warcraft, nothing to worry about