I only had her parents owning Quality Quidditch Supplies because B. Dunstan borrowed Quidditch Through The Ages from the library, and since Beryl doesn't play and isn't super into Quidditch, I needed there to be a reason for her to take it out, so I decided that she read it to prepare for her summer job at her parents' Quidditch supply shop. But now that Barney is here, she doesn't necessarily have to be that specific B. Dunstan! So Adrian's grandparents can stay as the owners. I'll just change her parents' shop to a different one, probably Eeylops.