It really is an ugly situation. She sees a man who is happy with his wife. I assume this is her idea of a "fixed" man. So she innocently sets about trying to steal him. She is innocent. She is just dropping her hankerchief, so to speak. Subtly encouraging him, but waiting for him to take the lead. Not really so innocent from my vantage point. I'd feel a need to alert the wife that there are games afoot. But that is just me. I'm sure most others would disagree.