A dang hangnail?

Had a very distraught Mom bring her 2 year old child into ER with CC of  ”foot pain”. Mom stated that child cried, pulled at shoes and cried when walking. I pulled off the child’s shoe and sock to examine the foot, and child had a hangnail on his big toe! Tx- cut hangnail! Cant believe mom waited 4 hours in lobby to be seen for kids hangnail! Why didnt mom look at kids foot herself before bringing him to ER?