Explanation:
when i was in junior high , it was about family matters ,i got into depression ,and tried to runaway from home
The prepositional phrase comes at the end of the sentence: in one hand.
Here, the preposition is "in" and the entire prepositional phrase is "in one hand." This phrase is describing the location of the rattle.
It has to do with gender. The father feels the son is a mini version of him so he would rather teach him stuff that he never got to learn stuff like that.