@Cecilia Pastores Griffey
Can't you find the Child (individual/person) in "Family Tree" of "FamilySearch"?
Do you mean you only input a 'single' name, with NO other "Details"?
Do you know the 'FamilySearch Person Idenfifier' (PID) of the Child?
Is that Child (individual/person) linked/connected to a Family?
(if so, so you know the Family?)
We need more details/information to be able to help.