Open-plan rooms have no doors to tell a cat where one territory ends and another begins, so she reads the space as one connected route. She wakes, stretches and scratches, crosses from sleeping spot to food, passes the sofa, and patrols the dining area. Scratching furniture works when it stands on that route at the moments she feels the urge, not when it decorates a quiet edge.
Put Posts Where Her Routes Cross
Set one post beside the sofa, another where the dining run ends, and a third close to where she sleeps. Beside the sofa matters because a sofa end is a social landmark she rubs, climbs and would otherwise rake, and a post there offers the same location with a surface made for claws. A post inches away from the sofa arm will be chosen over one across the room.
The end of the dining run catches her in transit. Cats scratch after meals and while moving between zones, marking the path with scent from the paws as they go. A post where the dining area opens into the living area stands directly in that post-meal walk, at the moment her paws are already active.
Near her sleeping spot covers the wake-up stretch. A cat rising from sleep extends her front legs, hooks her claws and pulls, and she will use whatever stands within a step or two of where she slept. If the post is down a corridor, the sofa cushion or rug edge beside her bed becomes the substitute.
Choose Posts She Can Stretch Against Without Rocking
Make every post high enough for her full stretch, with her front paws reaching high and her body fully extended as she pulls down. A short post forces a crouch, and a crouching scratch satisfies less than the long stretch she is seeking, so she returns to the sofa, which offers her full height without effort.
Make each post heavy enough not to rock, with a wide, solid base that stays planted when she throws her weight into it. A post that wobbles once teaches caution, and a post that topples teaches avoidance. Test it yourself with a firm push at the top before you judge her response to it; stability is a property of the furniture, not of her training.
Set the post flat on the floor surface she crosses, not half on a rug edge or tucked behind a chair leg. In an open-plan room the post should read as part of the furniture group it serves: alongside the sofa as a companion piece, capping the dining run, or standing by her bed as part of her sleeping corner.
Move a Rejected Post Into Her Path, Not Out of Sight
If a post is ignored, move it toward the behaviour rather than away from it. Watch where she actually scratches, then shift the post so it stands directly beside that spot, even if the arrangement looks less tidy for a week. A post that gains use in a prominent position can later be edged a short distance at a time, once the habit belongs to the post rather than to the sofa.
Do not exile a rejected post to a spare corner and call the problem solved. A corner she rarely crosses gives her no reason to start, and each day the sofa keeps its lead. Equally, do not add several new posts at once around the room; change one position, let her discover it on her route, and learn from which junction earns use.
Reward use in passing with calm praise or a brief game when she chooses the post, and keep the surface in good repair. Family Sharing through KinsLe shares her care information with household members who help look after her, keeping placement decisions consistent from person to person.