Yes I had thought of her straight away but discounted that as an answer. Like you, I feel the clue makes too light of what she did. The letters fit though!
How about Margaret Sanger? She was a birth control activist and nurse, which fits with "naughty nurse" idea. Not sure if she is well known enough to be correct, but worth a look.
Any answer is better than Allit, wardlaw.......
I can't get out of my head that this must be a "carry on" answer or similar, the "naughty" is the key I think.