The sneezing could be a symptom of respiratory irritation and/or the common lung disease rats have...what kind of shavings does your daughter use? Cedar and pine are bad for their lungs. Use hemp shavings or aspen or recycled newspaper litter....the rats are cute btw. My rattie "Sterling Campbell" died around 2 months ago.
[Spock]I have always been, and always shall be, your friend.[/Spock]