can't stand of lazy people

in school, there are 2 ppl that i really can't stand of.

first, is the girl that i think who is betrayer. and i hope that she isn't.

second, is the girl that has really lack of responsibilities and kind of selfish. she only thinks of herself and just let other people to cover up her workload. i am sick of covering up her responsibilities. nice is boring. she is already an adult, in fact, she is older than me, and so, she should know the consequences of her actions.

i am stuck. i do not know how to stop being nice and let her learn the lessons when no one wants to help her. she is just too dependent on the others. *sigh.