I went and checked the East Coast Spoiler Thread.

They are her two close friends who help her with the styling and all of that.

Not two hired professionals who do this work for a living.

That makes a difference for me in the "how fake is she".

I do think the "Golly, Gee" is authentic for me.

Yep, she has been working in the industry as a back-up singer, but she very much seems to be suprised that she can be the lead and that people like her in that role.

Singing backup she may have always believed she wasn't good enough, or may have had people in the industry telling her the most she can hope for is being a backup singer. After all if you got a good backup singer you want to keep them, and keep them as backup. You aren't likely to do anything to build up their ego so they think they can leave and go out on their own as a lead singer. You don't want the competition, and you don't want to have to find someone else to take their place.

She very much seems like a lot of people I know that always believed they were never quite good enough. Both from being too hard on themselves and from having others trying to keep them from really going for the big prize. Getting praise that says you really are that good can be very overwhelming if you've always gotten the message that you'll never be the star, just the one that works for the star.