Possible Clues:

• Negatively
• ''I write jingles''
• 'Not in favour of the way Father turns up in a poetic way, perhaps (9)'
• About the middle of 19 across, the lady is not in favour
• A small advertisement in rhyme may not be well received
• Not for the lady to get confused about 17 across
• In a way, against advertising jingles (9)
• Harmfully notice poetry lay hollow
• Advertisement in the form of rhyme may work against one
• How the lady gets around the poetry - not well