Spraying her with water can lead to ear infections if any gets into her ears. Some cats do not like aluminum foil, that may deter her. You can use double sided tape and see if that deters her, or you could just wipe your counters down before you do any prep on them because more than likely she is on them when you are not around.
One of my "counters" is an over 10 ' island in my kitchen which has a sink, our stovetop and seats 6 at the curve of its' "J". Butzie jumped up at the sit end and I told her, "What a good girl! You can jump that high!" She hasn't been up there since.