This isn't a poem.
Before my sister went to prison, she hid a treasure map for me in her room in a place she knew only I would look, the treasure map was in the form of a scavenger hunt around my city to different places where she left mementos of the times we spent together, a picture of us, and a thing to lead me to another place. Today I found the last place, in my own house. Believe it or not this was the hardest one to find, so hard, I spent two weeks looking for it. Once I found it, it was a little box that I had made for her when I was six. I opened the box and in it contained a letter and a black chained necklace. In the letter she apologized for all the stuff she'd done to me in the past, and saying she would be a better sister when she got out.
Seriously Mary,
I love you.