I really want to make the varsity team?

So next year I really want to make the varsity field hockey team I have been working really hard at building up my stamina by working out all the time! *im so tierd hah* but what are some tricks to making varsity?!?! (my coach hates me because she doesnt like my parents and my uncle but i am a really hard worker so do you think she will ever let me get on varsity?) I am going to be a Junior next year and this was my frist year playing on a team because my freshman year I severly injured my ankle in ballet (3 fractures and i tore all of my ligaments, tendons, and nerves. so i cant run as fast anymore)