Will you tell me the name of a painting of this woman?

Question

I remember the woman laying in the water with blond hair and it was night time, I think, and she was surrounded by forest, other than the lake. The painting is at the Louvre, so can anyone tell me its name?

Answer 1

 

Are you thinking of Paul Delaroche's painting "The Young Martyr"? 

It is in the Collection of the Louvre.