Story concept: Missing brother

The title is tentative but the main plot involves a girl who is very pacifistic along with being a proficient healer when it comes to medicine. Her older brother is a adventurer, along with being the only family member she has left, who has gone missing while trying to complete a mission. As a result, the girl ends up having to put out a mission to create a group of adventurers of her own to help her get her brother back. Among her group members is a female adventurer who is far more experienced when it comes to exploring the world and fighting against dangerous threats so she ends up proving to be a valuable asset to the team. 

I don't know what to call this story yet but the setting itself is called "Terrastria". It's also a parody/tribute to role-playing games of the fantasy kind (especially tabletop or even video game) along with referencing various other fantasy tropes in general.