A new mother and father whose Winthrop home burned down in a massive fire Sunday spoke to 7NEWS Wednesday with an update on life with a new daughter, and how they are picking up the pieces after the tragedy. Sean and Chiara Keenan welcomed their daughter Giannina Grace Keenan just hours after their home went up in flames. Winthrop Fire responded to calls reporting a fire at a home on River Road at approximately 4:30 p.m. Sunday. Crews said it qu…