Been attending for eight years and has only recently become disruptive? Sounds like she may have some well-founded suspicions.
The article doesn't say that. This is probably the culmination of eight years of grief that the pastor has endured from this woman.
It doesn't say why she wants to look at the books. The reason is likely something kooky, like checking to see if the pastor donates to the Masons or the Illuminati.