If the entire family is going for a one week holiday, would you leave your helper at home alone or send her to agency's hostel?

A friend of mine actually arranged for her helper to go back to her home country for a holiday when they went away for 2 weeks. I think they checked with her if that's what she wanted and bore most of the expenses. But it's not practical to do that every time you go away so it really depends on how long you've known the helper and whether you trust her or not. I know a family whose helper has been with them for close to a decade and the family trusts her so whenever they go away and they don't bring her along, she stays at home and carries on with her duties as per normal. At the beginning, the employers will get the neighbor or another family member to drop by and check on her every now and then but as the years went by, trust was cultivated and they don't do that anymore.