Possible Clues:

• A recluse or a crab
• Hardly a socialite
• The sole one able to get her boy up
• Half of the ermine is in 21 across but not in company
• The boy turns up after her to be all alone
• Recluse, one who lives in solitude
• Her backward boy is no company man
• Recluse, anchorite
• Anchorite or religious recluse
• Solitary island has appeal