Possible Clues:

• Institution raising professional hearts over a long time
• Annie's home and playing on, eg, a harp
• Traditional fate for stray offspring perhaps — hang with a rope …
• One could look after the children if their parents are late
• Public institution with new depiction of pagan hero
• "Annie" setting
• House parents never visit
• Sounding off among the aristos, taking a long time to get home
• Children's home forever faced by endless changes
• Parentless children's institution