She shades Beyonce and Mariah all the time. I laugh it off because it's funny and not that serious. She never drags them as hard as she drags other girls because she respects them, however.
"I am a Beyonce fan. I'm gonna be watching this documentary cause fortunately one of the TVs in our kitchen has closed captioning so I'll be able to understand what she says. You know Beyonce can't talk. Beyonce sounds like she has a fifth grade education. She can't talk. Honestly. We really do have the closed captioning for times like that."
I understand that it's her job, but it's personal at this point for her. If no one cared about Gaga then she wouldn't talk about her since that'd be bad for ratings. If she truly believed what she said, Gaga wouldn't cross her mind, but Gaga does because there's a part of her that does care but feels the need to constantly attack.