[dragonwriter]

> Is she really a manager?

Yes.

> In factories the foreman was considered part of the Union rank and file.

She's not a foreman.

> Basically if you can be promoted up into a position it can be a union job.

That's not how the NLRA works; in plenty of workplaces people can, even if they rarely do, promote without limit and most management positions don't require business degrees, but that doesn't make all those positions NLRA-protected.