to be horrified by dreadful use of the apostrophe in signage. DH says nobody else notices.

[EccentricaGallumbits]

A high street shop.

On the big front sign thingy over the window.

Sweet Melody's

That was the shop's name.

Am I wrong and unreasonable to find this a shocker?

Maybe Melody is the shop keeper's name?

as in Sweet Melody's shop?

Or just wrong? DH says it's only people like me that would notice.

YANBU. Tell DH that clearly loads of nutty MNers normal sane people do notice and are annoyed by it.

60s/70s .

You're a natural born pedant, OP. Welcome to the fold.

The sign might have been grammatically correct but if so, why does she assume that she is sweet? What is she selling