I assume to find out if she'd seen anything. He didn't say anything to her, she just said she'd seen it. He's a lawyer...he'd probably know by looking at her face and then fill her with rubbish if she'd hadn't seen it.
We enjoyed it but found ourselves laughing at it too - is it our sense of humour or meant to be funny? The lady next door was in one of the soaps years ago,but I can't remember which.