Dust Child by Que Mai Phan Nguyen

From the internationally bestselling author of The Mountains Sing, a suspenseful and moving saga about family secrets, hidden trauma, and the overriding power of forgiveness, set during the war and in present-day Việt Nam. 

In 1969, sisters Trang and Quỳnh, desperate to help their parents pay off debts, leave their rural village and become "bar girls" in Sài Gòn, drinking, flirting (and more) with American GIs in return for money. As the war moves closer to the city, the once-innocent Trang gets swept up in an irresistible romance with a young and charming American helicopter pilot. Decades later, an American veteran, Dan, returns to Việt Nam with his wife, Linda, hoping to find a way to heal from his PTSD and, unbeknownst to her, reckon with secrets from his past.  At the same time, Phong—the son of a Black American soldier and a Vietnamese woman—embarks on a search to find both...