There's no business plan for surviving 90 consecutive Christmas days
The conclusion being that its not her fault?
Not that I'm not sympathetic to her situation in general, but your statement has an implied assumption that should be exposed as the myth that it is. Her "business plan" very much is the problem.
The sooner that everyone realises that, the better. It's a poor business plan that means a third party can, on a whim, destroy your revenue stream.
I'm not going to pretend that Organic isn't the cash cow of our business. But we have used that free cash to develop other streams that quite literally pays the bills. Losing Google would see a big revenue crash, but enough would still be coming in to regroup and rebuild without any unplanned restructuring.
Negative SEO may or may not be efficacious in harming others, but even in theory it takes more than a mere whim, mistake or oversight to work.