Carrie was filled with so much anger after she had pigs blood dumped on her. She was the laugh stock of the whole prom. Carrie was so angry that she destroyed everyone and everything with her telekinetic power.
Margaret had lots of emotions over the course of the whole book and sadness was for sure one of them. Margaret was so sad because her daughter was filled with so much sin. She would go to the church and pray and pray.
Chris became very frustrated when his girlfriend wasn't sure if she wanted to dump the pigs blood. He also threatened to leave her at the prom if she wasn't quick enough. At some point he even threatened to kill her.