Drmatic irony is present when

Dramatic irony occurs when the audience knows something that is going on in a situation but the characters are unaware of what is going on. Because of this understanding, the words and actions of the characters take on a different meaning. This can create intense suspense or humor.

Explanation:

"why don't you like me the way i am? " i cried. "i'm not a genius! i can't play the piano, and even if i could, i wouldn't go on tv if you paid me a million dollars! "

explanation:

the conflict between jing-mei and her mother is over jing-mei's piano lessons since her mother wants her to become a prodigy but she does not want to play it any more.

whatever is after like is what is being compared they are comparing bumping into you like they are scared to catch germs you have and to you being contagious