In the article that Palin links to it says this:
Ever since she burst onto the national stage as Sen. John McCain’s running mate in the 2008 presidential election, Sarah Palin has been scrutinized and ridiculed by the “tolerant” left.
Palin’s family has come under attack, as well.
Over the past decade, the former governor of Alaska has handled things with a grace unseen from most politicians.
Yesterday was the anniversary of Palin’s church being burned that led to her announcement to step down as governor.
This article then links to another article which does not mention the church fire at all but gives Palin credit for Donald Trump's rise to power. (Right along with Vladimir Putin I would assume.)
The article also claims that Palin was under constant attack from the Left, (You're welcome.) and that those attacks are why we do not have Palin in office any longer. (Once again, you're welcome.)
Now look, at this point nobody knows for sure who started that church fire. The investigation kind of just petered out.
Those on the Right blame Palin critics, though that makes no real sense. (I mean if WE really wanted to hurt Palin we would have burned down the Mugshot Saloon.)
And those on the Left think that it was likely a supporter burning up records that she did not want revealed.
However what I do know for sure is that it in no way had any impact on Palin's decision to leave office.