I actually wear a painters' dust/odor mask when changing the Uros tank for the same reason. Though I only change it out twice a year. She might be happier with a millet substrate, my Uros did not do as well on it, since they preferred to eat the millet seed to their greens, but a number of people on here really like the millet. Newspapers may be a good option, though it depends on the Uro. Some of them are avid diggers, while others seem to not care too much one way or the other. From listening to people, it sounds like a properly set up soil substrate is a great option for the Uro, but it takes more work and research to maintain and set up, and can also get very dusty.
She may not have considered the painter's mask, it is an easy solution if she only has the problem while changing out the sand. They tend to be relatively cheap, and last quite a long time (under 10 bucks).
Elizabeth
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1.0 Mali Uro Archimedes (May he rest in peace)
0.0.1 Egyptian Uro Zuberi Mosca Khu (Mosca)
0.0 Fish
0.1 Sulcata Minnie
1.1 Iguanas Flik and Loki
0.1 Newfoundland Jasmine (RIP)
0.1 Feline Winter
Indiana & Wisconsin