What is the deal with the young girl praying in the background of the Titian, under the (apparent) watchful eye of what looks to be a nanny or governess?
My untutored guess: it is the woman as a child, begging forgiveness for her first lustful thoughts, in which she has just indulged as an adult woman.
The ladies in the background of Titians Urbino are not praying or vomiting (as another post said). They are finding something for the (nude) "mistress" to wear in the trunk.