The Sisters Chase book by Sarah Healy

The Chase women - Mary, Hannah, and their mother Diane - eke out a living running a tiny seaside motel that has been in the family for generations. Eighteen-year-old Mary Chase is passionate, beautiful, and free-spirited. Her much younger sister, Hannah, known as 'Bunny', is imaginative and has her head in the clouds. But when Diane dies, Mary discovers the motel is worth less than the back taxes they owe. Her survival instincts kick in, and as the sisters begin a cross-country journey in search of a better life, she will stop at nothing to protect Hannah. But, burdened by unspeakable secrets, Mary must protect herself, too...