To consult or recover the Profile of a "deleted" child:
Step 1 - Select the Group to which the child belongs
Step 2 - Click on the "People" option
Step 3 - Select the 3 little magic dots
Step 4 - Choose the option "Show Deleted".
Step 5 - Press the card of the child that has been deleted
Step 6 - Select the "Recover" option and you're done!