To me, the scene when Casca and Griffith first met sums it up well. Griffith didn't kill the rapist for Casca. He put a sword within her reach and she chose to take it up and defend herself. She came from a village where the people didn't know how to protect themselves and so they were at the mercy of anyone stronger, like an invading army. Casca saw what happened to them and how they just lived in fear and accepted their fates. I think once Casca got a taste of standing up for herself and realized there might be other possibilities for her life where she could become someone strong enough to defend herself she didn't want to go back to being helpless.
Griffith was her inspiration. He showed her that there was another way she could live and changed her life forever, but Casca had the strength and will to build that new life for herself.
Casca did dedicate herself to Griffith, but I think at her core is a person who wants to have the ability to defend herself and what she cares about and who has the courage and determination to gain that ability. I think that's a big part of what Guts loves about her.
Griffith was her inspiration. He showed her that there was another way she could live and changed her life forever, but Casca had the strength and will to build that new life for herself.
Casca did dedicate herself to Griffith, but I think at her core is a person who wants to have the ability to defend herself and what she cares about and who has the courage and determination to gain that ability. I think that's a big part of what Guts loves about her.