I think we may be overlooking a possibility that the parties responsible for placing the woman in this facility knew full well that the nurses working there would not perform CPR.
It is a known policy that all tenants of the facility are reportedly knotified of, and sign off on, prior to moving in...
If that report is true, they effectively agree to a limited DNR policy. That may be a part of the DNR confusion.
Not all who wander, are lost.
I have become death, destroyer of worlds.