posing for a magazine doesn't make a woman a prostitute and I doubt it was implicit in the contract.
This reminds me of expressions like: "she got drunk, she asked for it, she had it coming", etc.
I think some are being a little bit judgy...
Not all grown-ups react the same way or do the right thing whatever that is in each circumstance.
Not a good idea for any of us to start casting stones. Coulda woulda shoulda...