for me, it's less about the destination and more about the struggle. The best growth arcs force the heroine to question her own foundations. Take Vin from 'Mistborn', for example. She starts as a skittish street urchin who trusts no one, believing strength is purely physical survival. Watching her slowly, painfully, learn to rely on others, to lead, and to understand that power can be a burden was incredibly moving.
Another one that doesn't get enough credit is Maomao from 'The Apothecary Diaries'. Her growth isn't about becoming a warrior; it's intellectual and emotional. She begins as a detached observer, treating people as puzzles to be solved. Her arc is about the quiet, seismic shift from seeing humanity as a clinical study to developing genuine, frustrating, and protective attachments. The strength she gains is in vulnerability and social navigation, which feels uniquely potent.
I'd argue against some of the more common 'strong female lead' picks where the growth is just a linear power-up. The real compelling stuff happens when the character’s core philosophy gets dismantled and rebuilt, often at great personal cost. That internal conflict, the shedding of an old skin that no longer fits, that's the hallmark of a truly strong growth arc for me.