Remedy should be a single at some point. It was the highest charting after WWWY. It's not my favorite song on the album (it reminds of Vanessa Carlton) but I could see it being a huge hit.
Singles should go:
Hello
When We Were Young
Water Under the Bridge or Send My Love (to break up all the ballads)
All I Ask or Remedy (should be All I Ask but Remedy might have more hit potential)
Can't see her doing any more than that. As much as I love I Miss You, River Lea, and Sweetest Devotion, I just don't think they'd work as singles.