First off, calm down & stop beating yourself up. Your daytime humidity is a bit low, & your nighttime spraying is rather high, unless your snake is in shed. But yes, 60-65 % is the goal.
What are the temperatures she is kept at?
IF you aren't seeing bubbling, or open mouth breathing, & not hearing raspy, whistling, crackling or squeaking sounds with her breathing, I'm willing to bet the drooling you saw was just because she recently took a drink of water shortly before you picked her up, & you caused the water to backflow. Snakes' bodies are a long tube, & sometimes a drink doesn't go down as fast as you might think- it depends on how they're laying.
BTW, to be given the "horrible owner" award, you'd have ignored what you saw. Remember, the only "dumb question" is the one you don't ask- and GOOD owners do what you did- ask.
If you're not sure when your snake last drank water, it's a good idea to keep their head higher than their body- to help keep water (& food, if they ate recently) down where it belongs.