Hufflepuff and Prewitt?

Well, well, well. Now it makes perfect sense why the Hufflepuff commonroom and dorms are near the kitchens....

Helga Hufflepuff, as described and depicted on JKR's site (Wizard of the Month, May 2007), looks rather suspiciously like Molly Weasley... plump, orange-red hair. And they are each exceptional at food-related charms.

Does this mean the Prewitts are related to Helga Hufflepuff?

Is Helga holding the cup Harry must find? If so, where is the picture of the badger...facing Helga? Or is this just some other cup that belonged to her?

Hmmm.