For all the same reasons you do: In the first episode she said she’d be disappointed in her kids if they “decided” to become gay; in another episode, she told Dustin that, lacking gaydar, she was unable to tell if he or any other man was gay – unless, of course, they were wearing makeup; and more recently, when looking at the photo of Dustin’s family when he showed the houseguests his HOH room, she was surprised at how happy and accepting his parents appeared to be with his “choices” in life. Plus her name is, suitably, a homophone for a bitter leafy vegetable.