What is the position of the Catholic Church regarding an unmarried post menopausal woman living under the same roof (maintaining separate bedrooms) as an unmarried permanently impotent man? Are they living in sin if there is absolutely no form of intimacy whatsoever? (The man has mild autism and cannot abide any form of intimacy, either physical, not even an accidental touch of a shoulder in passing, or psychological. The woman is his care taker. There is no one else living in the home.)
Per my understanding, the Catholic Church would reserve judgement or position on this because it is not in the context of Marriage or Sexual relationships. There are vast situations where people need in-home care by caregivers of the opposite sex.
If there is possibility of scandal or abuse, then there should be steps taken to mitigate these and put some "checks and balances" & transparency.