Most Nigerian Uromastyx for sale are wild-caught imports, first thing that should have been done is quarantine her and get a fecal sample to the vet.
I suggest improving on your husbandry, a 40 gallon breeder is not sufficient for even a single uromastyx. They like a basking temperature of 130-140 degrees and once you achieve that temperature, a 40 gallon breeder will not have enough temperature gradient to provide an adequate cool side. The minimum enclosure recommendation for uromastyx is a 4x2x2 tank.
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