It looks like her old company was just being cautious.
Assuming they weren't, um, pressured into providing their betters in The Government a fig-leaf.
Of all the people who've ever googled both "pressure cookers" and "backpacks" in the last year, Our Betters decide to noisily investigate a blogger?
Methinks they are trying to intimidate us into thinking we're all under the microscope. That would also explain why they so publicly demanded everyone's passwords from ISPs last week.
Pure Kabuki for the masses.

Nut-job Conspiracy Theory Ping!
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How would the government know to pressure the comapny.
I think this is just a blogger turning time theft from her company into a publicity stunt.
They googled "pressure cooker bomb" and "backpacks," apparently not too long apart. And it was someone who just were let go from a job, and the cmployer was concerned enough to report it.