I think that this is about reflecting over a relationship that had ended in that person's life. And it was a relationship where the person reflecting was really into it. And the person just reflects over when she knew it was ending (the drought was the very worst when the flowers that we'd grown together died of thirst) and once it ended and the heartbreak that she went through and how just because she is over that person does not mean that she doesn't miss the relationship. And eventually the song gets to the present where she is reflecting and she is okay with her life and not heartbroken and she knows that it's going to be okay
I think that this is about reflecting over a relationship that had ended in that person's life. And it was a relationship where the person reflecting was really into it. And the person just reflects over when she knew it was ending (the drought was the very worst when the flowers that we'd grown together died of thirst) and once it ended and the heartbreak that she went through and how just because she is over that person does not mean that she doesn't miss the relationship. And eventually the song gets to the present where she is reflecting and she is okay with her life and not heartbroken and she knows that it's going to be okay