Possible Clues:

• Nanny is under Ma for discipline
• Am insured to work with children!
• Ladies one interrupted hurry back to the childminder
• Alice, for example, had daughter after US marine skipped
• She's a minder working with us
• Nanny has to rush back, having spoken about me the wrong way
• Childminder styled, in USA, 'minder'
• Person employed to look after someone else's children
• A minder taken with us when travelling?
• Nanny, dangerously, is unarmed