I don't think there's enough logical processes going on in their brains for them to have any sort of cause-and-effect lines of thinking. The snake isn't going to think, "If I get in the water bowl, that will spill the water, then condensation will build up and I can hide behind the fogged up walls."
They WILL utilize the water bowl as a sort of hide if the ones they currently have are not to their liking, or if they don't have any other hide at all. They like to feel very snug in their hides, and "hugged" from all sides. Make sure the non-water-bowl hides are small enough and enclosed enough to do that.
Another thing to consider is to check for mites. If she's constantly trying to soak, she may be seeking relief from mites.
I only see two fixes for your problem if she continues to soak. Keep the water even more shallow. I promise, she won't have any trouble finding it. You'll just have to remember to replace it often as it evaporates. OR...get a smaller water dish that she won't be able to crawl into.
In the meantime, reconsider what hides you are using and check for mites.
