First off, I'm not a vet, and can't offer medical advice, and if you're worried at all, there's no substitute for a rabbit-savvy vet.
But... it sound like she's purring; happy chattering. She likes your pets. If she's eating normally, she's probably fine, especially with the stretching! This is a sign of contentment/feeling safe normally.
Like
@Preitler said, there's no imminent danger in her getting wet, but best not to stay wet. Rabbit skin is fragile, and just like our skin, if kept wet, it can develop problems.
You may just have a strange rabbit! ☺ Everyone has their own, distinct personality!