Out of curiosity, how long have you had the snake? And when did you notice that she started soaking? It could still be mites, even though you have not noticed them before. If this was a recent pet store purchase, it is possible that there were no [i]visible[/b] mites on the snake, just eggs that you can't see. Eggs will hatch out within a month, so if this is a recent addition, you could have had some invisible tag-alongs.