Molly Weasley
Reasoning: This is the card of mothers. Everything nurturing, caring, healthy, natural, pleasurable, abundant and maternal is represented by this card. It is earthy and warm, full of generosity and love and representing birth and creation. Molly is the quintessential mother, nurturing and protecting not only her children but Harry as well. She represents every desirable aspect of having a mother that Harry never got to experience.
In a traditional tarot deck, this is the Empress.
Notes
This card was fun. I kind of wanted to style her kitchen after kitchens I grew up in, my mother and grandmothers - lots of orange and warm 1970's fashionable Muggle colors, heehee! Hence, the orange countertop. :) Those are carrot slices magically floating into the pot, by the way....