Start where she already poses for free
The calmest family photos with a cat in them happen in the place she chooses herself: the arm of the sofa, the window seat, the end of the bed where she supervises the room. Build the group around that spot instead of carrying her to a backdrop, a garden bench she never sits on, or the middle of a rearranged living room. A cat placed somewhere unfamiliar spends the session trying to leave it, and every frame shows ears half back and a body angled for escape.
Time the attempt for a part of the day when she is naturally settled in that spot, such as after a meal or during her afternoon doze window. Scheduling a shoot for the exact hour she usually races around the house with a toy is a battle nobody wins.
Short sessions, settled people, no gripping
Plan for a few minutes, not a sitting. Have everyone except the cat take their places first, settle, and stop arranging themselves, then let her be brought the short distance to her usual spot or, better, wait for her to wander into the arrangement out of curiosity. Movement, laughter, and repeated repositioning around her are what raise her heart rate, so the humans do their shuffling before she joins.
Whoever sits beside her keeps one hand resting lightly on the cushion or strokes her in the place she likes, rather than holding her chest or scruffing her still. A held cat photographs as a held cat. If she gets up and leaves, let her go, play with the group photos without her for a few minutes, and let her return if she chooses. Many cats come back precisely because leaving was allowed.
Light, flash, and lenses from her point of view
Use the light already in the room wherever you can. A flash firing close to her face, especially repeatedly while strangers aim unfamiliar equipment at her, is the fastest way to end a session, and red-eye fixes exist for a reason. Natural window light flatters everyone in the frame anyway.
Keep the camera at a distance and zoom in rather than pushing a phone toward her nose, and keep shutter sounds and timer beeps in mind for a sound-sensitive cat. One photographer giving calm direction beats three people calling her name at once, which reads to her as a row, not an invitation.
Skip the costume, keep the dignity
Outfits, hats, and held poses from social media are where calm sessions most often tip into genuine distress, and a cat tolerating a costume with frozen stillness is not enjoying a photo opportunity. A clean, brushed coat and her natural collar photograph beautifully and honestly. If a holiday frame is the goal, put the decoration on the humans and the furniture, not on the cat.
Watch her signals throughout: a lashing tail, flattened ears, dilated pupils in normal light, skin rippling along her back, or repeated attempts to leave mean the session is over, however close the perfect shot feels. A cat who is allowed to end sessions early stays willing to be near cameras, which is worth more across years of family photos than one forced frame.
Keep her best portraits together
Save the successful shots, and a note of what worked, such as her window seat after lunch with no flash, rather than scattering the results across everyone's phones. KinsLe's Family Sharing lets the family keep her profile photos and those settling notes together, so the next birthday or holiday picture starts from what already works for her instead of from scratch.