Depemds on the level of interest and knowledge. I told her where I was going and why and even showed her the online bookings.
When I got back she asked me if I enjoyed Singapore. Many ways to interpret that comment, but you would have to know her quite well to get it right.
Would take a wife or GF LTR, but not family. She would come in handy to carry the camera.
If you take a Thai woman to KL you will need anther 3 wallets.