I wouldn't take anything Johann Hari says as gospel, if I were you.
Not that I'm a fan of Littlejohn - his spiteful attack on the poor woman was entirely wrong. But Hari's word is not to be relied upon.
I think the coroner is misguided, however. It seems from the evidence reported that the poor woman's suicide notes talked about debts, several bereavements and the stress of her job. She didn't blame the press intrusion. It may have been wrong, but it is equally wrong to ignore what she actually said about her motivation.