Sorry, but when she says,
"Look left,
Look where you wanna be.
Look left,
Look where you left me."
I think that's her being released from feeling sad and upset over what he did to her. "Up" is where he wanted to be, in the first verse, but now, it's reversed. Now he wants to be "left," but now she's up. It sounds to me like he's wanting to go back to where they were, but now she's "up," and doesn't need him anymore.
Sorry, but when she says, "Look left, Look where you wanna be. Look left, Look where you left me."
I think that's her being released from feeling sad and upset over what he did to her. "Up" is where he wanted to be, in the first verse, but now, it's reversed. Now he wants to be "left," but now she's up. It sounds to me like he's wanting to go back to where they were, but now she's "up," and doesn't need him anymore.