Possible Clues:

• Ballet jump
• Ballet leap
• The canter needs to be adjusted for the jump
• Vault's core ending as it should have started - with overhead covering
• I left Catherine for a short time, in preparation for jump
• Beg outside church? Could be for the high jump
• Spring ballet performance
• Bound to be performed by the ballet-dancer
• The trance possibly produced by ballerina's move
• Beg to welcome children for a bit of ballet