And then she does not still need control of her mouth.

It's hard to feel like that matters, but at least it's abstractly pleasant, as meaningless stimuli go. 

The guiding is very important, and also pleasant. She tries to imagine the way caustics of sunlight through shallow water perturbed by inconsistent wind would play across a somewhat reflective metallic surface with an interesting curve.

Causal Web, as usual, becomes more involved in the process after a bit of guiding has happened. Then, a bit later, she starts taking notes.

...kind of a lot of notes, this time around?

Success! ... Wow that's a lot of typing, maybe it means she should— no. No taking actions about it, there's a document. What if the imaginary metal structure had two layers and the bottom one was flat and more specular, and there was a gap, and the top was curved and had complicated patterns of circular holes. 

They can continue the mouth-based guiding until they are both fully unbacklashed, then! (It takes long enough for the taste of mouthwash to have mostly faded.)

Then she can release Causal Web to her editing, and Emily can write some notes on geometry and then drink water and stretch.

Causal Web will stretch too, check her email, and then roll her eyes. "Well," she murmurs, "I did warn him." 

"My next two power uses are going to be on the longer end, unfortunately," she tells Emily.

"Understood!"

... She's just going to quickly add look for backlash-safe music to her to-do list, then, "Ready when you are!" 

She'll let Emily get in bed first, and then follow her. 

She arranges herself facing Emily, this time. "I don't need my hands free for this one," she says, by way of explanation. 

On the one hand, no phone, but on the other hand, increased efficiency of both power use and guiding, and under both hands, Causal Web. She adjusts positions to achieve a pretty decent maximization of skin contact with the new constraints.

Yep! Causal Web makes sure her face is resting against Emily's and that her arms are making contact with Emily's back.

And then she can pull up the very rude email Mister Baxter just sent her and get her power to trace it back towards what he's trying so desperately to cover up. 

(Her backlash climbs, a bit slower than before due to the increased skin contact.)

As does Emily's. Most of it is just moving the marbles, at this point, but she's trying to fold the twisty little many-armed star thing out of paper from memory.

Time passes.

Twenty minutes...

Thirty minutes...

Forty minutes...

She systematically has each paper structure crush itself into a little ball and tuck itself away. She keeps up the sinusoidal movements of the marbles, to match the growing backlash better. She stays pressed along the body she's tasked with guiding, which rises and falls with breaths: waves. It's warm where they touch; both bodies sweat, which increases the efficiency.

At just over fifty minutes, her backlash stops climbing.

And starts decreasing.

... Should she stop its fall? No, that's why she's here. She puts away her marbles. The clarity is starting to dull, but that much is obvious as anything. She needs to start the count. From one for safety.

... Eight, nine, ten, eleven, twelve is a good composite. A safe number.

She doesn't even have to move her head far, for better fluid transfer than the contact with sweat. Even though saliva has less salt, the feedback is very clear.

Causal Web doesn't really react to the guiding, beyond opening her mouth when the tongue comes knocking insistently.

She then obtains the access she needs without obstacles, and follows the clear instructions. There are many salivary glands she needs to stimulate.

Glands can be stimulated, yes. And the guiding commences.

And the guiding continues. This will be a long one.

After a while, she accidentally scrapes her own tongue against a tooth, and this causes an unexpected tiny burst of extra fluid exchange for the target of her guiding. She has to hold still for a few moments, reminding herself that biting is not a pre-chosen guiding method and might even prevent her from finishing this task. And then she resumes her movements, a bit more carefully.

A few minutes after that, Causal Web tentatively begins participating in the process.

That could be a coincidence and there's nothing she can do about it even if it's not. The participation is nice. They're making progress.

Yeah.

Further along the progress spectrum is the notes.

They're quite short, this time, which means Causal Web pulls up a news feed to scan earlier, though this is only visible to Emily in the way it's reflected in her bright blue eyes.