If you scroll down the page of your first link, you can find the definition of a guest:
Guests
First Class, Star Alliance Gold and Eligible Paid Lounge Membership customers are each entitled to a maximum of one guest. The guest must enter the designated lounge with the Eligible Customer and present a boarding pass for any Star Alliance member airline operated flight departing from the local airport.
So no, if your friend is not on a Star Alliance flight, you can't bring her in.