Before We Were Yours by Lisa Wingate

Memphis, Tennessee, 1936. The five Foss children find their lives changed forever when their parents leave them alone ... one stormy night. Rill Foss ... must protect her four younger siblings as they are wrenched from their home on the Mississippi and thrown into the care of the infamous Georgia Tann, director of the Tennessee Children's Home Society.

South Carolina, present day. Avery Stafford has lived a charmed life. Loving daughter to her father, a U.S. senator, she has a promising career as an assistant D.A. in Baltimore and is engaged to her best friend. But when Avery comes home to help her father weather a health crisis and a political attack, a chance encounter with a stranger leaves her deeply shaken