At least she waits for you to finish.
My roommates got two kittens last year, and we learned that they liked toilet water. Then we noticed they liked playing in the bathtub after we showered. Then we noticed that the rubber mat was being chewed on and finally actually caught them doing that.
Best of all though, if you let them come in the bathroom while you showered, they'd jump up on the edge and poke their heads around the curtain to lap up the water along the edge, and pace back and forth along the edge between the liner and the outer curtain, watching and waiting. Occasionally one would attack the other and push him/her into the shower too. They seemed to get confused and not know if they should be running away or not from the water.
After showering, they'd climb in and walk around getting themselves wet, even sitting in pools of water. But while walking they'd constantly be pausing to shake the water off their feet, like they couldn't figure out why they kept getting wet.
The boy for some reason took a liking to only the water in the soap dish part of the shower wall. We never kept soap there luckily, but he'd lick that thing dry. You could hear his tongue rasping against it.
The funny part was that they wouldn't drink water left in a water dish. That they just dumped out. We'd stand there watching them. They seemed to think there might be something underneath, so they'd push the dish around and eventually lift it up. The few times they did drink, the boy wouldn't actually put his face in usually. He'd dip a paw in a couple of times to get it nice and wet, then lick the water off.