Possible Clues:

• ''Two Mules for Sister ___''
• 1986 #1 hit for Starship
• Author Paretsky
• Teasdale of poetry
• Pop singer Bareilles
• "Love Songs" poet Teasdale
• First name in desserts
• FDR's mother
• "Two Mules for Sister ___"
• Sister in an Eastwood film