Dan Abnett
Playing Patience
Ravenor (series)
The secret origin of Patience Kys: When Ravenor hunts heretics on a dismal world, the last thing he expects to find is a young woman with a remarkable – and deadly – gift.
Warhammer 40k
short

Also in:
The Magos
There Is Only War
Lord of the Dark Millennium
Let the Galaxy Burn
Ravenor: the Omnibus