"No, but you do not have to be blood to be so similar," she pointed out fondly. She and Cassie were proof enough of that, as well. Diana returned her gaze to Alfred and her fond look didn't alter in the slightest. From the few interactions she'd had with her world's Alfred, she knew she would like the man. It helped that he cared for Bruce. That was more than enough to endear her to him.
"I'm sure it's very similar to how you and I manage it. It's not easy to surprise him, but we've managed to learn a few tricks." Diana's were maybe a bit more unconventional and often revolved around their bedroom activities, but Cassie continued to surprise him with their bonding dates. Her ward was incredibly persistent for the very best of reasons and it was impossible to be too stone faced in relation to her enthusiasm.
"I'm not sure what we're having for dinner, but you'll stay?" she asked Alfred, though she immediately looked at Bruce. "He'll stay, yes?"