The daughter gave her family the incredible, highly valuable gift of not having to attend a wedding. I’ve had invitations to weddings that would have cost over $2k just to get there and stay one night, never mind the formal and other clothes required. She also saved her parents thousands by not staging an extravaganza. She’s not broke and doesn’t need the “starting a new household” items that wedding gifts traditionally provide.
Covid Girl’s family ought to send her cards and/or donate a few bucks in her honor to a charity she supports.
If I got a notification that no gift had been received and the bride was upset I’d probably go to the Dollar Tree and get a 50 cent card and type up an insert:
“Congratulations! A gift in your name has been made to the Human Fund - Money for People.”