Do I need to worry?

[Mumsturn4]

My DH talks about work and mentioned some of the staff where he’s been working for a while (he’s a tradesman and one name keeps coming up and apparently she’s told him she’s not happy with her DH and is thinking of leaving him -she’s also told him other personal stuff which in my opinion no one but her immediate family should know. I feel as if she’s testing the water with my DH and I’ve told him this and he’s said no way but I have a feeling, I suppose gut reaction that something could or is happening. What would you do?

What can you do other than see how things pan out and ensure DH draws a line under going any further.

I don't think she's testing the waters. More she probably feels she doesn't have anyone else to talk to about it that isn't 'involved' in some way. It depends I suppose what other 'personal' things she's been saying.
Is she a colleague or is your DH her boss?

She’s just someone working at the place, my DH is a contractor, he’s been working there for a few months - the other stuff she’s been talking about is something really bad involving her child - if that had happened to mine there’s no way I’d discuss it with somebody I don’t know. I think I’m just going to have to wait and see.

You’re right, there’s not much you can do at the moment.
But something’s put you on alert, so if I was you I’d quietly keep my ears and eyes open for any changes in behaviour, habits, attitude etc of DH.