[Faceman]

Anomen's motivation to join the order is pride and a urge for himself to be a glorious warrior. Passing his test and understanding the ways of the order is what will make him grow in wisdom and character.
However it is possible that his temper (especially after losing his sister who is the only person he still holds onto in his life) pushes him over the edge thus getting rejected by the order and NOT growing up.
Unlike Mazzy who wants to be a Paladin for the good of the world he wants to be a knight of the order for his own good. Hence his neutral alignment opposed to her good alignment.
Summing up:
LN: self-centered Anomen obeying the law to achieve glory in the Order

grows up to LG: Anomen having learned the ways and the purpose of the law and the order

or fails to do so and becomes CN: Anomen who doesn't care about the law anymore as his career in the Order is not an issue anymore.