"Don't trust him," she seemed to hear a voice say. She turned round to look at the cat, ears flat against his head and fur standing on end. 

"This is your cat?" she asked the man at the front door.

"I've been very worried about him. I'm so glad you found him." He smiled attractively.

"Why do you think I ran away?" said the voice in her head. "I'm so glad I found you."

Oh, just what I need with a hangover, she thought. A conflict. On one side, a handsome man with  a smile that could melt chocolate; on the other, a skinny cat which attacked one of my plants. She temporised. "Won't you come in?" she asked the man. "Maybe we can discuss this."

"Don't let him in!" wailed the voice in her head. "You'll regret it!"