system
Given the following post, respond as if you're commenting on Reddit:
human
[Warhammer 40k] How is a Sister of Battle crested?

We see in space marine chapters that various recruiting methods are exercised to weed out the potential candidates from the unworthy. Then, when those initiates are selected, they undergo intense and radical surgeries to be transformed into essentially Demi-God's.

Now I'm aware the Adeptus Sororitas do not retain the same abilities as their male counterparts but I can't believe for a moment that you would simply hand one of these pious women a bolter and power armour and wish them the best of luck. So how exactly does a (for example) female hive ganger go from barely scrapping by in the slums nearly starved, beaten and unclean to a glorious example of The Emperors wrath delivering bolter rounds to heretics faces?

*edit: title spelling, created not crested.
gpt
The Adepta Sororitas aren't "crested", nor created ala the Astartes. The Orders mostly recruit from the Schola Progenium, academies run by the Ecclesiarchy for war orphans or children of the various offices of the Imperium. The Schola Progenium educate their wards in the arts of war and faith, preparing them for the war against those who would threaten the Imperium of Mankind.