From "Manual of Muad'Dib" by the Princess Irulan

"Arrakis Awakening" by the Princess Irulan
A thought came unbidden to Jessica's mind: Paul will be undergoing his sandrider test at any moment now. They try to conceal this fact from me, but it's obvious .
And Chani has gone on some mysterious errand .
Jessica sat in her resting chamber, catching a moment of quiet between the night's classes. It was a pleasant chamber, but not as large as the one she had enjoyed in Sietch Tabr before their flight from the pogrom. Still, this place had thick rugs on the floor, soft cushions, a low coffee table near at hand, multicolored hangings on the walls, and soft yellow glowglobes overhead. The room was permeated with the distinctive acrid furry odor of a Fremen sietch that she had come to associate with a sense of security.
Yet she knew she would never overcome a feeling of being in an alien place. It was the harshness that the rugs and hangings attempted to conceal.
A faint tinkling-drumming-slapping penetrated to the resting chamber. Jessica knew it for a birth celebration, probably Subiay's. Her time was near. And Jessica knew she'd see the baby soon enough—a blue-eyed cherub brought to the Reverend Mother for blessing. She knew also that her daughter, Alia, would be at the celebration and would report on it.
It was not yet time for the nightly prayer of parting. They wouldn't have started a birth celebration near the time of ceremony that mourned the slave raids of Poritrin, Bela Tegeuse, Rossak, and Harmonthep.
Jessica sighed. She knew she was trying to keep her thoughts off her son and the dangers he faced—the pit traps with their poisoned barbs, the Harkonnen raids (although these were growing fewer as the Fremen took their toll of aircraft and raiders with the new weapons Paul had given them), and the natural dangers of the desert—makers and thirst and dust chasms.
She thought of calling for coffee and with the thought came that ever-present awareness of paradox in the Fremen way of life: how well they lived in these sietch caverns compared to the graben pyons; yet, how much more they endured in the open hajr of the desert than anything the Harkonnen bondsmen endured.
A dark hand inserted itself through the hangings beside her, deposited a cup upon the table and withdrew. From the cup arose the aroma of spiced coffee.
An offering from the birth celebration , Jessica thought.
She took the coffee and sipped it, smiling at herself. In what other society of our universe , she asked herself, could a person of my station accept an anonymous drink and quaff that drink without fear? I could alter any poison now before it did me harm, or course, but the donor doesn't realize this .
She drained the cup, feeling the energy and lift of its contents—hot and delicious.
And she wondered what other society would have such a natural regard for her privacy and comfort that the giver would intrude only enough to deposit the gift and not inflict her with the donor? Respect and love had sent the gift—with only a slight tinge of fear.
Another element of the incident forced itself into her awareness: she had thought of coffee and it had appeared. There was nothing of telepathy here, she knew. It was the tau, the oneness of the sietch community, a compensation from the subtle poison of the spice diet they shared. The great mass of the people could never hope to attain the enlightenment the spice seed brought to her; they had not been trained and prepared for it. Their minds rejected what they could not understand or encompass. Still they felt and reacted sometimes like a single organism.
And the thought of coincidence never entered their minds.
Has Paul passed his test on the sand? Jessica asked herself. He's capable, but accident can strike down even the most capable .
The waiting.
It's the dreariness , she thought. You can wait just so long. Then the dreariness of the waiting overcomes you .
There was all manner of waiting in their lives.