What is an adjective that expresses someone's choice to speak up (or to stay silent)?
Nothing required her to go into the details of the assault. But she wasn't XXX. She stepped forward and gave a full account.
Shy, bashful or reticent isn't what I'm looking for. I want to convey that this is not a decision driven by emotion or by an inherent character trait, but rather a clear-cut rational choice.
