Inspect her closely for mites just in case, but I have a couple "submarine" snakes that like to lay in the water bowl all the time. Just be careful definitely during breeding season. I bred one of my submarine snakes last year and she stayed in the bowl a lot and got RI. I feel like it was because she was in the water, which was 70 degrees, and breeding stress. She now gets a small bowl she can't soak in.