That depends on what you consider "rewrote". She didn't rewrite the tune, she just played it at a different pace. She didn't add any new words, she just hummed and oohh'ed during a part of the song where only instruments play and that instrument only part is also in the original song.
It depends on if you consider humming along with a song actually lyrics or just a form of instrument playing. I mean, she also played the song on an acoustic guitar, which wasn't the case for the original. Should she then be credited for any cover of the song using an acoustic guitar too? If she didn't humm but instead tapped on her guitar, should she get credit for every cover of the song where the performer taps on thier guitar?
It's also worth pointing out that she very quickly deleted the Tweet and, as of right now, has yet to make any other reference to the song. I think this means one of 3 things:
1: She realised she really didn't have a leg to stand on in this and it was pretty dumb.
2: Sony has actually reached out to her already. Though I don't see any result of this. Both versions of the trailer are still up (
here &
here) and unmodified with nothing added in the description about the cover. I have no idea where that article is getting the idea the video was set to private, btw.
That was never the case.
3: She herself didn't actually have permission from the original artists so it wasn't a great idea to attract attention to her cover.