Read the following article and answer the question.

This past month I was together with her and my four other sisters again after too many years apart . It was a noisy time to have all five sisters together but SO MUCH fun . We came together because my 17 1/2 year nephew graduated with honors from high school ( with a 4.8 thank you very much ) and will be attending UC San Diego this fall ! The only person missing was Dad .

Why is the room the narrator is in so loud ?
There are many sisters in it .