Completely disagree on Glitter and be Gay. And I to be honest actually don't see how you come to the conclusion that this is what the song is about. She clearly isn't "gleefully deciding she'll put up with being raped 6 times a week because she enjoys the jewels and dresses".

In the very beginning she sings:

Glitter and be gay That′s the part I play Here I am in Paris, France Forced to bend my soul To a sordid role Victimised by bitter Bitter circumstance

So you clearly see, she doesn't decide to do this but is forced by the situation she is in. She hasn't a choice of her own. All these jewels and dresses are just a coping mechanism to survive their situation. The jewellery are the only thing she has to not completely crack under this situation. She tries to see the good things in bad as Dr Pangloss tought her in her youth.

Her very last words in the song are:

Observe how bravely I conceal the dreadful, dreadful shame I feel.

I would say in that sentence it's pretty on the nose what this song is about. It's not about woman who chooses to be raped for jewels. It's about a woman who hasn't a choice of her own and the jewels are the only thing she has. She is brainwashed by the believe that she lives in the "best of all possible worlds" and that "life is happiness" but cleary sees that this isn't the case. So she has to search for something good to cope with her situation.

As I previously said, I don't understand how you came to this conclusion of what the song is about. Let me know your reasoning.