to create a realistic, natural expression of the relationship.
I think that's the answer because if the poem was set up with a regular meter or rhymed, ect., it definitely wouldn't have the same affect on the reader. It's a simple relationship between a father and daughter, and the poem is almost a dedication to the father. It doesn't need to be written in a certain matter to express the love and admiration the daughter has for the father, just simple words to express the emotion
Yes, Tris shot Will. But it was for self defence.
~Hope this helped :)