You guys are hilarious.
There’s a single way you can be sure not to get COVID. Avoid people.
To the OP: it makes no sense to “market” it because unless you have an outbuilding in which to house and surveil your “steady,” you have no guarantee and in fact would do well to assume she’s encountering other people. Not servicing. Just encountering. Which is enough.
If you don’t like the risk, stay in the house.