Gothic architecure of the 12th to 16th Century as you put it, seems to me related to the design and manufacture of buildings...

I respectfully submit that it seems to me by suggesting this is inextricably linked to a cultural phenomenon which has it's origins (in an equanimical sense) in the 19th and 20th centuries, it is you who is being somewhat fanciful...

I happen to agree with Tentacledead and Silverflame that the artists ideas are rather trite, and that if she is a person of character, she should appreciate the fact that people enjoy her work for whatever reason.

The only valid reason I can see for her to view a connection to goth people unfavourably is if she is actually daft enough to believe all that rubbish about Satan worshipping and suicide pacts being the norm in these circles...