There is a ferry between the 2 islands. It takes 1.5 hours.
https://www.hylinecruises.com/inter-island/
She could have attended the fundraiser and returned back to MV on a ferry.
With the little people?!? Surely you jest! The Queen doesn't consort with commoners.
Use the ferry?
And mix it with the little people?
No, that would never do for her Royal Highness!
that's for the plebs - not for the empress dowager.