Ginger reveals to Black Beauty that she's had a pretty horrible life. She says that if she'd had Beauty's upbringing, she might have had as good a temper as her. But because he's been systematically ill-treated right throughout her life, she has a very quick temper, which has gained her the unfortunate reputation of being a difficult horse. At no point in Ginger's life has anyone, man or horse, been kind to her, and the end result is as sad as it is predictable.
Upon being taken from her mother after she was weaned, Ginger was put with a lot of other young colts. They made it pretty clear that they didn't care for her, and she didn't care for them, either. Even so, Ginger was able to derive some contentment—indeed, the only contentment she's ever really derived from her miserable existence—from running around with the colts. The young horses used to have great fun galloping and frolicking around the free meadows and chasing each other round the field.
But all that good fun comes to an abrupt end when it's time for Ginger to be broken in. When the men come to put a halter and bar in Ginger's mouth, she resists fiercely, showing what would become her trademark spirit and all-round feistiness. But the men finally catch her. From now on, it's downhill all the way for poor old Ginger.