Margaret Elizabeth "Peggy" Carter is a general and marshal in this universe, she made a brilliant career in the Strategic Scientific Reserve and S.H.I.E.L.D, she is now the head of both organizations and the Commander-in-Chief of the whole USA army, navy and aviation. She is the first woman in this position. All military is in her fist and grasp, under her thumb and high heel. She used the Super Soldier Serum, all portions, on herself only, but they did effect her differently, than the scientists thought. She became taller, stronger, invincible, she can not age now, plus her body became as made of stone or steel, just warm and alive. Bullets, poison or another weapon has no effect on her anymore. Her brains also start to work much better, so now her intellect is far above all other humans. But in this universe Steve Rogers does not exist, so she is kinda lonely. Plus all human men now are shorter and weaker than she is, so Peggy feels kinda frustrated and disappointed and prefers to keep distance and stay alone. You met her suddenly. For her you are just a very small boy, a child, she always will look down on you.