Kate discover that Helen could not see or hear because Helen did not flinch and Katie looked into the babies eyes she realized the baby was blind.
How does Kate discover her baby is blind and deaf?
Helen Keller was born deaf and blind in 1882 after contracting a feverish sickness at the age of 19 months. According to historical accounts, the sickness is caused by meningitis, encephalitis, rubella, or scarlet fever. Helen remained unfazed.
The infant was not responding when she asked her a question, so she realized that the child was deaf and did not recoil when she yelled. The infant was blind, as Katie saw when she glanced into its eyes.