A steadier ground guide to bathroom resistance. Several different problems hide behind it and they need opposite answers, so the first job is working out which one you have.
Notice what you're bracing for before you bring it up again. This is the part of caregiving people are most ashamed to find hard, and naming that to yourself is what keeps the shame from leaking into how you ask.
Before anything else: is she passing urine at all, and when did her bowels last move? A bladder that will not empty, or a bowel that has been blocked for days, produces agitation, refusal and confusion that look entirely behavioral and settle once the mechanical problem is fixed.
Resisting the bathroom is not one problem, and this is where most advice goes wrong, since a prompt that helps one version worsens another. Watch a single episode start to finish without stepping in, and note where the chain breaks. She may not register the urge at all. She may not find the toilet, or reach it and no longer recognize the fixture, which is why bins and sinks get used. She may stall partway through, unable to hold the sequence together. She may refuse the prompt and go ten minutes later on her own, which is about autonomy. She may accept the toilet and refuse the help, which is about dignity. Or she may be frightened of the room.
The fixes diverge from there. Prompting helps someone who cannot start. It does nothing for someone who cannot sequence, and it insults someone who is refusing because being told when to use the toilet is being treated as a child.
Rule out the medical causes first, and be careful with one. Sudden confusion in an older adult gets blamed on a urinary infection almost reflexively, and a positive dipstick means very little over sixty-five, since up to half of older adults in long-term care carry bacteria in the urine without being ill and treating that has not been shown to help confusion. A negative dipstick is more useful, because it makes infection unlikely. Either way, new confusion needs a proper look rather than a dipstick and an antibiotic.
Constipation matters more than most families realize, since a blocked bowel presents as liquid leakage mistaken for diarrhea and can obstruct the bladder as well. Medications belong on the list too. Bladder drugs like oxybutynin do two things families are rarely told about: they blunt thinking, which is why prescribing guidance says to avoid them in dementia, and they can stop the bladder emptying, which is the emergency at the bottom of this page. Opioids, sedating antihistamines and older antidepressants do the same. Take the list to the pharmacist and ask, and do not stop anything yourself.
Much of this is functional rather than bladder failure. Studies repeatedly find people who know they need to go and cannot get there in time, and functional causes are the ones you can actually change.
Work out which problem you have, then change the environment before you change the routine.
If you try scheduled prompting, do it as a three-day trial rather than a life sentence. Offer the toilet every two hours through the day, record what happens, and then look: if fewer than about two thirds of those trips succeed, prompting is not the answer for her and you are allowed to stop. Know going in that this means prompting every two hours and recording every outcome, which is a great deal for one person, and that these programs usually fail from exhaustion rather than from the idea being wrong.
Families consistently name this as the hardest part of caring for someone with dementia, and many put off asking for help to protect the person's dignity, which means carrying it alone far longer than anyone should. Pads are a tool rather than a verdict. There is a worry, not a proven finding, that a pad which removes the reason to walk to the toilet can quietly end continence that was still recoverable, so treat them as support rather than the whole plan. And a pad that keeps skin dry and prevents a night fall is doing real work.