Possible Clues:

• Detaches, as a brooch
• Removes, as a temporary hem
• Removes, as a brooch
• Detaches, in a way
• Removes from the Windows taskbar
• Frees, in a way
• Lets down, as long hair
• When she opens out, one can get the nun to sip (6)
• Loosens, in a way
• Frees