The best way to interpret how the central conflict was resolved in the story is:
The central conflict is resolved effectively since the girls resolve their differences and make a decision to leave a note.
This interpretation captures the essence of the character's journey and how they address their conflict regarding the broken window. Even though there is an unexpected twist with the tornado, the main conflict between Mariko and Felice about what to do after breaking the window is resolved through their agreement on taking responsibility.