Their Best Friends’ Bratty Little Sister by Chloe Kent

Sienna Gallagher needs to face her past and forgive herself, but when her brothers shove her into their private jet bound for a ranch in Montana, this after her last stunt involving her best friend, Alyson, she is beyond furious.
Not only did they send her to the middle of nowhere to face her demons, but she also now has three equally infuriating and way too dominating brothers watching over her who aren’t afraid to rub dirt in her face and tell her how they like things run.