Possible Clues:

• Problem is to learn a French instrument
• Compact disc broken by old woman in habit? Strange and puzzling question
• Care of sister's instrument becoming a problem
• Dilemma to rip off the foreign instrument
• Sister feeds fish odd question
• Sister taken in by trick leading to peculiar problem
• Puzzling question from sister tucking into food and drink
• Firm with a woman in order to beat a problem
• Sister, being into fish, takes to drink, which is puzzling
• It's a riddle or a hard question