The issue isn't that she doesn't take offence to the N-Word, that's nothing new.
The issue is that she clearly hasn't made an informed decision based on the historical context of the word, but rather decided it was ok because of ignorance to the subject.
I mean, really. Educate yourself.
I can understand where she's coming from. She seems to be laughing at the fact that it's even used in an offensive way towards black people. You know? Like when a white people says it in a demeaning way. Like all of the other slurs, it's silly that the word even exists in a negative way at all. I've had moments like these before; albeit not publicly, and especially not on Twitter.