When an anxious, artistic teen girl receives a flyer for auditions to her dream school, then she is challenged to create a portfolio while trying to navigate her ruptured home life, until an accident with her drunk father forces her to improvise.

When an artistic teen receives a flyer for auditions to her dream school, she is challenged with creating a portfolio while trying to navigate a ruptured home life, until an accident involving her alcoholic father forces her to improvise.
Final revision. Sorry. Sometimes pulling back and getting a second pair of fresh eyeballs helps.

Sorry, I meant 'artistic'.

When an artistic teen receives a flyer for auditions to her dream school, she is challenged to create a portfolio while trying to navigate a ruptured home life, until an accident involving her alcoholic father forces her to improvise.

'anxious' seems redundant here, as well as 'girl', finally, 'involving' works much better than 'with'. I think this reads, sounds, and flows a lot better. Hope that helps. Sounds like a great story. You might want to play around with some other adjectives besides 'talented' to make your protagonist a little more interesting.