i need help.

so here is what i'm thinking. i want to write a new story. and i'm kind of in the mood right now so i'm going to make this short. but i would like to know if anyone thinks this is a good idea. i want to have this girl and i don't know what her name will be yet. but i would love some suggestions. anyway, she is going to go on a roadtrip with her twin brother and her best friend. and in the midst of all the fun of the roadtrip, her brother and best friend end up hooking up. and leaving her to be the third wheel. and some stuff will happen to her in between. not sure what yet. but i will post stuff up here so you guys can tell me what you think. so can anyone tell me if they think its a good idea? be honest.