Imagine person A of your OTP gazing affectionately at their child as s/he is working/doing something/busy. When person B enters person A notes how their child acts just like person B, but then their child does something unexpected that neither of them would do.
Sybil, already the most adventurous of the three Crawley girls, had taken her first steps earlier than either of her sisters - just ten months and she had begun to teeter around the nursery. Cora had missed her first steps, much to her dismay, but Mary and Edith had both watched as Sybil rather calmly steadied herself and took a few steps away from Mary in the nursery- much to Nanny's amazement. Mary had raced downstairs - abandoning her lesson - to tell Cora and was displeased to see her mother's face crumple with disappointment - Cora, of course, was only disappointed that she had not been there to see it herself.
Watching the girls play together - Mary and Edith almost instantaneously bickering about a doll and Sybil pleasantly giggling to herself as she pounded her little feet along the nursery floor, Cora felt her heart quicken - three beautiful daughters. She couldn't imagine loving them more, though, sometimes she looked at them and felt an ache not of love- but of failed destiny. If only one had been a boy. She would quickly snap herself out of this thinking, because she couldn't imagine being without any of her girls - perhaps, then, a boy in addition to them.
Sybil turned, wobbling, and saw her mother peeking into the nursery from the doorway. She totted over, plunking down after a few unsteady steps, but picking herself right back up again as she determinedly made her way for Cora.
"Hello my baby," Cora said, gathering her skirts and kneeling down to receive Sybil, "My baby, my beauty." She embraced Sybil, lifting her up. As she did, she heard Robert behind her.
"Where's nanny?" he said, looking over Cora's shoulder.
"Oh, she's just run downstairs to get some thread - one of Mary's dresses needs mending. I told her I would watch the girls a moment." she placed a kiss on Sybil's head, brushing her dark tresses from her eyes, "This one has her Papa's resilience, so it seems." she said, smiling up at Robert, "You should see her, she's walking around, toppling over, and then picking herself right back up - onward march!"
Robert grinned proudly at his daughter, opening his arms for Cora to pass her to him.
"Sybil, darling, you're going to be a handful aren't you?" he said, bringing his face close to hers.
With what he could only describe later as a decidedly mischievous grin, Sybil leaned in and bit her father's nose.