Water Fountain vs. Water Dish for cat?

We use a water bowl for most of our cats. We do have one cat that will only drink out of a coffee mug, or what she prefers a glass of water with a plant in it - such as ivy. She's twelve years old and has done this her entire life. She started drinking from the plants like this as a kitten. She went to live with my brother for several years, he never had luck keeping plants alive in a glass of water so she started just drinking it from a coffee mug. She came back to live with us recently and immediately switched back to drinking the plant water.