~snip~
It depends on the lady in particular. Some are skeptical about anything gambling. Some their husband, family and or friends has a gambling office.
I think if you are wondering about this then it means there's something to it.
If there's no issues with the activity, then I guess there would be no issues mentioning it to your partner.
Unless of course they realize that the gambler is now an addict based on their observation of their behavior....