THE LONE SOLDIER: SEASON 1

Vivian Coulson was an agent of S.H.I.E.L.D. She was the younger sister to Phillip Coulson, a shield agent who was killed during the battle of New York in 2012. Before shield she studied at Columbia University. She was recruited to shield in the early 90s. After the battle of New York she received a message from agent Maria Hill saying she needed Vivian immediately at the HQ.