Oh how wonderful. I’d have happily let her stay there. I would have just moved it a little every day and turned it round. I doubt they would have had much impact on your bees
You should have given them a super or twoWell, in that case, you can have these nasturtiums that you've cast in my direction right back. I'd not want one setting up a nest in a poly hive because once it gets sufficiently big they'll eat away the poly and completely trash the box to make room for the nest to be enlarged. I've seen the aftermath. They reduced most of one side of a poly national brood to about 1mm thick.
And last weekend I opened the shed to get the mower out and one practically took my head off as it made for daylight. She was building a nest under the roof right above the mower seat, at about head height. Much as it might have been fun to claim that the grass couldn't be cut until Autumn because there was a hornets' nest in the mower shed it would probably not have gone down at all well, so she (the hornet) had to be encouraged to go elsewhere. Not to mention that someone, probably my father-in-law, would forget that there was a nest in there at some point and open the door to find himself with a faceful of hornets, though in fact these days he'd probably not even notice the nest until he'd headbutted it. Again, probably wouldn't have gone down well.
I've just had exactly the same thing at my bait hive in the garden. She was huge and sounded like a helicopter. She didn't like the accommodation and flew away a few minutes later.