Normal yawning and/or realigning her jaw wouldn't worry me too much, but since you are using the word "crazy"... I'm not sure what to think about that. The dangers I have heard regarding mite treatments are usually more neurological stuff such as looking like they suddenly developed a severe spider-head-wobble type condition, losing track of what direction is up, etc.

Are you sure the spray you put on the snake is safe to be used directly on the animal?

What are the active ingredients in that and in the ardap?

Taking her out of the enclosure and putting her in a different tub for the time being sounds like a good idea.