Isabelle, age 7, has been complaining of headache, coughing, and an aching chest. the care provider makes a diagnosis of a viral infection. the child's mother tells the nurse that when isabelle first said she had a headache, the child's father gave her half of an adult aspirin. the mother has heard of reye syndrome and asks the nurse if her child could get this. which statement would be best for the nurse to say to this mother?