Just because she did not work in PR explicitly doesn't mean she isn't doing "PR" for the company. My take is that apple does not actually care,
at all, about "mitigating the impact of mining valuable minerals in conflict zones". They care about not getting caught doing things that make them look bad, and her role was to prevent that from happening, to not actually change anything. She seems to have realized this to some extent, and when she made a stink about it, they reassigned her.
To me it seems odd to stay at the company for several years after that. Something makes me think she's really just looking for more pay, because if she really cared about issues with rare mineral mining in conflict zones, she'd work for a non-profit that deals with that.
