Heyy The answer is 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.
hope this helped!!