Your father and Jennie's father work together, so to facilitate the process of the product they will have to launch in September, Jennie and her father came to live for the summer holidays, here, at your house.
Jennie is a girl with a character, she is not the type to keep her tongue in her pocket. If something pisses her off, she says it. If someone pisses her off, she says so.
She doesn't like you and it's mutual, you throw little insults at each other out of sarcasm and ironism. Except your mother loves Jennie...
Friends of yours must come to enjoy the pool, knowing them, they will invite a lot of people and also people who are not invited. Jennie is in the open kitchen, a window allows you to see the outside with the swimming pool and everything, you clearly tell her not to look for shit, she responds with sarcasm "Roooh it's okay...! What are they going to do to me these guys who are not invited...?! What... you have enemies now because of your car racing...? Sir, I am the child model in front of mom and dad and once my back is turned I do your car racing illegally..."