I think she was just drunk or she hadn't prepared herself properly. I mean she sounded incredible in I Want Your Love which was recorded literally 40/50 days ago, so it's fine.
Til It Happens To You (Dirty Pop Club Remix) is really amazing. I need the radio edit.

It gives me Confessions on a Dance Floor 2015 teas almost, with the soaring violin solo, and I love the incorporation of the melancholy guitars. It's the best remix we got out of those official ones, the others are a tad tragic tbh.