Possible Clues:

• Where one finds nuns hiding knight? That is awkward
• Cloistered away, hiding name that is embarrassing
• It's the wrong time up North for the sisters ringing new address
• Unsuitable home, sister's place, that is new inside
• Where religious person is sheltering knight? That is awkward
• Up north, leads intimate evensong naturally in religious community - is that ill-timed?
• Inopportune
• It's awkward for popular novice that is taken in by religious institution
• Awkward naked fiend in popular religious establishment
• Causing slight difficulty