She cut a tooth in her sleep ! I ' m so happy that all her crying was about a tooth , I suspected it because her hands were constantly in her mouth and the drool was like a river , but I ' m glad to know my instincts were right . She wo n't let me see it , but I can feel it ! Every time I open her mouth , her tongue is fiddling with the new tooth so I ca n't see .
According to the above context, answer the following question.
Why was she crying about a tooth ?


She was a newborn who was teething