TexasCHLforum.com

I am a Realtor. I would have to assume that if your wife is holding an "Open House" for a client that she or her broker has a contract for sale of the property. If that is in fact the situation, it may be legal for her to have a firearm. The statue says on your own property or "property under your control". Such as an office that you would rent but not own. That may mean that a property under contarct for sale would be a property under your control. Or it may not.

We have always had a rule that a female Realtor cannot work an open house alone.

You really need to ask an attorney for a legal opinion. And get your wife a CHL.