Oh, interesting. Sounds like the more dangerous sort of "diplomacy" job.
So basically what they are struggling to do is make ends meet as whatever it is they do (some sort of printing service?) moves from the old ways to new.
The fox scrolled the combination until the lock opened. She ran through the back door, four paws scurrying lightly yet furiously...
Nice! Quadraped, yet able to use their front paws as hands.
She gathered the items with alarming speed, and placed them all beside a backpack which had already been overloaded.
She looked at him, tilted her head to explain that she was sorry, and replied, “A job just came up, and I think that I should take it.”
You separate your dialogue out as its own paragraph a few times. You only need to do this when you change speakers or change who's doing the action being described. Also, you do a lot of "She does X", "She does Y". I'd mix up the sentence structure a bit, like so:
She gathered the items with alarming speed, and placed them all beside a backpack which had already been overloaded. Looking at him, she tilted her head to explain that she was sorry and replied, “A job just came up, and I think that I should take it.” The pad had the usual parts for a hind paw pad, but with other adjustments. The cushioning just under the paw had a bit more padding than usual. In addition, two irregular protrusions extended out the rear, as if to give the bearer more balance. But what that balance might be used for was entirely up to the bearer’s discretion.
So she can use it to walk on two legs, maybe? Cool.
She walked back over to him and lay down under him. She closed her eyes for a brief moment before looking up at him.
“But I can,” she replied, “And that’s what scares me.”
So she's the dominate one in this relationship. It's subtle at first (he's afraid to speak first when she's rushing around). But by the end it becomes the point of the story. What I take from her lying down is she wants him to be the dominate one, to say "no, you can't go", but he never does and thus she's the one that has to go out and fend for them both.
Likewise, he doesn't want her to go, but can't give a reason. It's because he can't live alone and make his own decisions.
Interesting blend of animal and human behavior there! I like it.