There are nice and wants the person to feel comfortable. So, welcoming them kindly...
The narrator feels as if they are sick,and if she/he got on the bus they will feel humiliated. Insted a couple of friends in her/his class was with the narrator, Ms.Gruwell was the only one who could talk to her/him about anything,and talking to her/his friends made the narrator feel completely better.
Hyperbole
this is because a hyperbole is used to dramatise something
Answer:
I think it won't because it will have benefits for others