Kelly's been indoctrinated as a kid. She feels canine-like loyalty/ indebtedness to The Knowless. Just as she had started solidifying her make-good-musical-choices-alone muscle (after breaking free of Matthew's strong strangle hold on her individuality), she goes back under Bey's shadow where nothing creative grows. If you think her former bandmate would let Jay make her star shine brighter than his wife's, you underestimate her controlling, me-first ways. RiRi's hiatus must be good news to her right now.