What is the ruling on a woman caring for her husband's paternal cousin who suffers from dementia and requires full-time care?

The basic principle is that males should serve a male patient who has no male mahram, and it is not permissible for a woman to directly wash or clean him. However, if a woman is compelled to serve him due to the absence of males to perform this task, we hope that she would be excused. This situation is similar to the ruling concerning a doctor, who is permitted to look and touch to the extent of the need.