Cats can be incredibly nosy. They have the means (and skill) to jump up just about everywhere, including on to your kitchen counter while you’re busy carving your Sunday roast. Cats find interesting smells irresistable.
Unfortunately her ability to hop up wherever she wants to can be incredibly dangerous, particularly if she jumps on to a hot stove, or eats food of dishes in the sink which might not agree with her, or even make her sick (particularly if they have been left there overnight).
It is therefore extremely important that you teach your cat which places are off-limts – it may even save her life.