This very thing could have happened in the back yard. You get used to it. For that reason, after all the shouting stopped, we continued our romp, but in an area away from the snake.
Living in a box isn’t living. All we can do is hope the world is kind enough to allow us to give the kids as much fun as we can, whenever we can. That being said, we WILL freak out when we find a biting snake between 2 of our kids, not more than 3 feet away from them!
I assure you, we encounter fewer Rattlesnakes on the desert with the dogs than I personally do at work. There are days I’m up close and personal with more than 1.