Blessing in Disguise — Eileen Goudge

SISTERS UNDER THE SKIN
Grace and Nola. They are daughters of the same man, but grew up worlds apart. Grace in Georgian southern comfort, child of a powerful senator. Nola in the Washington, D.C. slums, a young black woman determined to succeed as a brilliant architect.

A terrible secret ties them together and shadows their lives...They discover that trust can be a blind gamble...love a desperate risk...and the web of destiny a Blessing in Disguise.