Unfortunately, a few weeks ago a good friend of mine was admitted to the hospital and had to have major surgery (the operation was a success and he is currently at home convalescening).
He told me that he had a few attractive nurses, but was in no physical shape to do anything with them even if they were willing participants.
So imagine if this is your "Night Nurse," who has taken a liking to you and comes to check on you very late at night.
Then suggest that you need to take a sponge bath and that she is required to assist you.