A speech to the public is one thing but doesn’t always reflect all the thought process going into making a decision. What her process is you nor I know as we don’t have pure insight into her mind. Thus is protecting her childern was part of the throught process, so be it. Nothing wrong with it whether she declares it publically in a resignation speech or not.
So instead of believing what she says, you buy into what the media reads into the tea leafs. Nothing in her speech suggest she is taking her family out of the spotlight. In fact, it suggest she is taking the fight to a higher level.