ребёнок был возращён матери

1) General subject: the child was returned to its mother's care (из больницы, от опекунов и т. п.)

2) Makarov: child was returned to its mother's care (из больницы, от опекунов и т.п.), the child was returned to its mother's care (из больницы, от опекунов и т.п.)