I may be the only mother in America who knows exactly what their child is up to all the time.

Summary

This quote suggests that the speaker, who claims to be the only mother in America with such knowledge, maintains a high level of awareness and understanding of their child's activities at all times. It implies that this mother is exceptionally attentive and involved in her child's life, possibly due to her keen observation or close relationship with the child. The quote also hints at the possibility of the speaker's motherly instincts or actions setting her apart from other mothers in the country.