Expect searching, calling, and changed habits
Two cats who have shared a home for years organise their days around each other: who sleeps in the sun patch first, who eats beside whom, whose scent is on the shared blanket. When one cat is gone, the survivor may patrol the house looking for her, call in rooms where they used to rest together, or sleep in the exact spot her companion favoured. Others go quiet, hide more, groom less, or leave food they would normally finish. None of this means you have done anything wrong. It is a cat adjusting to a home that smells, sounds, and feels different in the places that mattered most to her daily life.
Change as little else as you can
This is not the moment to move furniture, swap her food, deep-clean every blanket, or wash away the companion's scent from shared bedding in one go. Keep her meals at the usual times in the usual place, keep her litter box where it has always been, and leave a familiar-smelling blanket in her main resting spot for now. If the companion's belongings need to be cleared eventually, do it gradually, one item at a time, watching how she responds. Stability in everything else gives her grief fewer moving parts: her own territory, routines, and relationship with you stay predictable while the one big absence settles.
Offer company on her terms
Spend more time simply being near her — reading in the room she chooses, talking to her, letting her lean against you if she seeks contact — rather than repeatedly picking her up or trying to cheer her with energetic play she has not asked for. Short, gentle play sessions can help if she shows interest, especially at the times she and her companion used to be active together, but let her end them. A regular evening routine of a small meal, a brush if she enjoys it, and a settled place near you gives the day a shape she can rely on. Some cats become clingier for a while and follow their person from room to room; that closeness usually eases as confidence returns.
Watch appetite, litter habits, and hiding closely
Grief and illness can look similar in a senior cat, so keep a simple daily note of how much she eats and drinks, whether she is using the litter box normally, and how long she hides. A day or two of smaller appetite is common after a loss, but contact your vet if she stops eating altogether, drinks noticeably more, strains in the box, vomits repeatedly, or withdraws completely for several days. Tell the vet she has just lost her companion and when it happened, because that context shapes how they interpret her signs. If she was already a senior with ongoing conditions your vet monitors, an earlier check is wise rather than waiting for the next routine visit.
Think slowly about a new companion
It is natural to hope another cat would comfort her, but a stranger arriving while she is still searching for her old companion can add stress rather than relieve it. Let weeks pass and watch whether she relaxes into being an only cat — many older cats quietly enjoy undivided access to laps, beds, and bowls. If you later consider adopting, choose a calm adult cat whose temperament suits a senior, introduce them gradually, and accept that the new relationship will be different, not a replacement. Your surviving cat's comfort, not the household's wish to fill the gap quickly, should set the timing.
Keeping her companion's photos and story together in a KinsLe Memorial Accounts profile gives your family a place to remember the cat you lost, separate from the daily care you now pour into the cat who remains.