This Hazbin Hotel/Helluva Boss collage is of Rosie and Stella, though I feel that Rosie would scold Stella for her spoiled behaviour and the way she treats Stolas, who never asked for their arranged marriage either. Though it has been hinted in the HH pilot that Rosie's husband was killed during extermination day, and had joked about eating him in "Hello Rosie," she knows what it was like to be married and that fact might help her to connect with Stella, or at the very least have Stella listen to what Rosie has to be said.