That would depend on the nature of the business. The Victorians very much liked things to have separate spheres so men and women, business and domestic life were kept apart as much as possible. If someone was invited to a wealthy person’s country house they would usually be of the same or very similar social status as that person and as such the visit would be on friendly terms with business matters (if there were any) coming second. Events and activities would be provided by the host to keep the guests occupied and any more serious matters would be discussed in a casual way. Wealthy people had town and country houses and would try and keep their country houses purely for leisure rather than business which they would hope to take care of while they were in town. They may also have had an agent to take care of any business on their behalf so they weren’t bothered by it. The only business I could think of that would need someone to visit an estate would be in direct relation to the property such as an architect or estate manager in which case the wife would stay at home.