Looks like a typo. Although the initial 4.6 million barely sorta existed in the same sense that all these crypto fortunes did, I assumed they were referring to the +2 million growth as being a further fabrication on top of it.
Further down the article, the lawsuit is cited:
"As a result of Google’s material misrepresentations and other deceptive conduct, Ms. Vaca has been significantly damaged, including, but not limited to, financial losses of more than $5 Million, severe emotional and psychological distress, and the loss of the real estate business she spent most of her adult life trying to build," her lawsuit states.
So according to the article she did inverst the 4.6m.
She apparently sent $4.6m, over a period of months, thinking she was buying that much Bitcoin, but instead received nothing, not even Bitcoin. Whether you think Bitcoin is real or not, if she'd actually bought Bitcoin she wouldn't be out $4.6m, just up or down depending on what the market did in the interim, which isn't "went to zero."