Fresh to you is not the same as appealing to her
You fill her bowl with clean water and she walks past it to lap from a dripping tap, a garden puddle, or the dog's much larger bowl. From her perspective those sources share qualities her own bowl may lack. Moving water, even a slow drip, reads as safer and better oxygenated than still water, an instinct from ancestors who avoided stagnant pools. A puddle after rain is cool, spread thin, and free of the household scents that cling around a feeding station. The dog's bowl, meanwhile, is usually wide enough that her whiskers stay clear, deep enough to stay cool, and placed away from her food and litter, which is exactly where many cats prefer to drink. Her own bowl may also sit right beside her meals. In the wild, water near a carcass risks contamination, and domestic cats carry a milder version of that wariness, happily eating in one place and drinking in another.
Reading the clues in where she does drink
Each chosen source tells you something specific. Tap drinking points to movement and height: she likes water that ripples and a perch at counter level where she can survey the room. Puddle drinking points to temperature and spread: thin, cool water she can lap without dipping her chin. Raiding the dog's bowl points to location and bowl shape, especially if the dog drinks in a utility room or hallway far from her food. Note also when she drinks. A cat who waits until you run the tap has learned your routine, while one who drinks from every outdoor source on a warm day may simply be hot. What should concern you is a change in total amount: drinking noticeably more from all sources, hovering over bowls, urinating more, or losing weight alongside thirst are reasons to contact a veterinarian promptly, because no bowl rearrangement should delay checking a real increase in thirst.
Making her own water the easiest good choice
Start with location before buying anything. Move her bowl several feet from her food, ideally into a different corner or room, on a route she walks anyway — near a sunny hallway or the bottom of the stairs often works. Choose a wide, heavy ceramic or glass bowl, fill it shallowly, and refresh it at set times so the water is consistently cool rather than topped up. If movement is her draw, a quiet pet fountain placed in that same separated spot can replicate the tap without training her to demand the kitchen sink, though its filters and pump need regular cleaning or the taste will defeat the purpose. Keep the dog's bowl just as clean, since she will keep visiting it, and never solve the rivalry by removing the dog's water or scolding her away from it. If taps are the household battle, turning the drip off firmly and offering the improved bowl at the same times of day breaks the cue within a week or two for most cats.
Tracking the spot she settles on
Give each change a few settled days before judging it, and keep a simple note of where you actually find her drinking and how full each bowl is at refill time. That record prevents the common trap of maintaining three stations she ignores while the one she loves runs dry while you are out. Once her preferred place is clear, make that the official station: the other bowls become backups, not competitors. Anyone else who tops up water needs to know which bowl matters most and when it is refreshed. Log her chosen drinking spot and refill times in KinsLe with Care Teams, so the task is assigned and timestamped and her tap-and-puddle preferences are met by the bowl she trusts at home.