And if it's true that they're probably sleeping if they're not moving or flicking their tongue, then Pelota must find me boring, cuz she does that all the time when I hold her, lol.
I don't mean to scare you, and this might not be the case, but normally a healthy snake flicks its tongue readily while being held. But maybe she already has your smell?

P.S. This doesn't really have anything to do with this, but I got some pictures of all my reptiles, and i'll be posting them shortly. Now back on the subject.