I agree that it could be viewed as firing language, but only if we had no context.

However, we have context. We know that an ultimatum including a resignation threat was given.

Accepting that resignation and making the termination of their employment relationship immediate with some extra "Yeah, this is for the best" language doesn't mean that she was fired.

If you only want to consider the limited context of ignoring that she submitted a resignation ultimatum, aren't you just cherry picking?

No, I am not ignoring the context. If anything, phrasing Google's response as additional "Yeah, this is for the best" language while denying her terms for ending employment (when in practice it is very rare to immediately let someone go when they want to set up an exit date on their own terms) is cherry picking.

You can't choose the date of an employee's resignation.[1]

[1] https://cuiab.ca.gov/board/precedentdecisions/docs/pb39.pdf