Sparrowhawk's history contains mention of child death.
The only daughter from her parent's litter, Sparrowhawk had a specific set of ideals imparted on her from a young age: partner young, bear children, take her mother's role as the leader of their small pack when the time came. Sparrowhawk abided by these expectations, briefly courting a wolf from a neighbor pack until she fell pregnant. A spiral followed.
In the weeks which followed, Sparrowhawk's pregnancy would be bloated by the politics of a rival pack encroaching on their territory, seeking to eliminate a smaller pack for the short span of hunting grounds it offered. This, unfortunately, led to the death of her parents... but as the territory remained theirs, Sparrowhawk took to her role, singlehandedly leading the pack consisting of her brothers, aunt, and the few lones taken in over the years. During the next month and a half, Sparrowhawk would welcome five little girls into the world on her own, naming them for the flowers she'd always found beautiful.
As it goes, political disputes are always finished in blood—and the lives of two wolves weren't enough.
The pack's rival, greater in numbers, stamina... with nothing to fret for, attacked. Sparrowhawk would not know the outcome of her members, least not her brothers, determined to protect her pups. A desire, for once, she would not succeed in seeing. Ambushed, Sparrowhawk fought mercilessly until the first cry broke and the first pup died. Rendered shocked, lost, the assailants' job was easy, tearing apart any root the once-leader had to the territory.
She didn't even fight it when jaws clamped around her throat.
Sparrowhawk woke in Canis following the ordeal.
The grief consumes her, quietly, feeling this to be her biggest mistake, she refuses to admit to a soul of her failings; she'll speak of her fallen brothers, her pack, her own murder... but the loss of her children remains her own personal tactic of torment.