I’d suggest Aunty. My daughter gets cards signed ‘great Aunty’ such and such and we find it a bit odd! In person she calls them Aunty! But that is on her dad’s side of the family. On my side the females are aunties.
Seems it’s now Harry’s uncle - the Earl of Spencer - having his turn at a “tell all” book.
Another silly little ABC game - shops we have loved and lost?

