Maybe the girl is his niece. His sister’s daughter. And his sister died or moved to another state and the niece wants to keep living in the home town with her high school friends and band, volleyball, choir, and choir practice. And maybe she has an order sister or female cousin who is going to community college and also needs a rent free place to live. Her choir practice teacher turns out to be the truck driver’s love interest. And the truck driver winds up driving the motor home with every body on board to the various concerts and dance halls.
She's an excellent guitar player and once she gets into this truck driver's home, she starts singing the songs as she's alone most of the time. But she never wants to go back to school (due to the bullying and emotional abuse she already suffered) so needs to convince the truck driver to shelter her "outside the system."
Still working on the angle of the relationship with the truck driver. Is it romantic or "father/daughter".
Anyway, truck driver comes home one night and hears her singing. Is blown away. Insists that she sing in front of an audience. So in a "Coal Miner's Daughter" type moment, he takes her to a dive bar and convinces her to get up on stage and sing a song with the live band and they go nuts for her. Also, she has fully shed her "ugly duckling" and becomes a real beauty. When she turns legal age of 18, she goes professional and the story ends when she plays a concert in her hometown (the one she ran away from).
So basically it's a high-school dropout runaway who through the guidance of this truck driver, becomes a major country music star.
So I think it's a decent storyline that could even turn into a novel but damn, writing is hard! I keep re-writing everything and then later I often realize that what I wrote before was probably better than what i changed it to.
Thanks for the suggestions by the way. Writing is just a hobby of mine and hopefully I'll get something published at some point.