I think in part she is trying to wind him up. She tends to have low self esteem, and gets furious with him constantly looking at porn mags and commenting on all that he see's, and thinks nothing of it. She essentially wants to give him a taste of his own medicine.
She cannot understand, why he needs to look, when she is (in her own words a nympho), who is happy to indulge his every sexual desire, where ever and when ever he wants.
Davin