Mary J. Blige’s name has always been synonymous with empowering others, namely through her iconic music, but now she’s extended that reputation to another successful venture: the Strength of a Woman Festival. This year, the Atlanta event made elevation, education, and empowerment the number goal in every facet of the four-day affair (May 11-14) — from a moving Mother’s Day gospel brunch and extravagant house ball to lively celebrity-led concerts. But that mission was most evident during…