Is Rihanna emotionally unstable (Read description before judging)?

I was listening to Rated R and Good Girl Gone Bad the other day and I noticed something really odd. In the song "Take a Bow" in Good Girl Gone Bad, she tells everybody to take a bow, yet in "G4L" in Rated R, she tells everyone she licks the gun because revenge is sweet. Does this seem odd to you? Is she emotionally unstable? I also noticed that in "Unfaithful" in A Girl Like me, she apologizes for cheating and about her sexuality. Then on "Rude Boy" in Rated R she's glad about her sexuality and a different guy she's with. I seriously am confused. Can someone elaborate?
 
Back
Top