nostr:npub1m2lq440p5h5a4t8uugcpa9z8huuechhegwspr8rs7fn7fv9m602sz3qlv3 unless she is pretty damn old, total lack of desire means something weird is happening. Trauma, medical issues, something is off with her. Seems like she was looking for an excuse to get out of banging. She needs help. 
Btw withholding sex isn’t a good way to get your man off porn, I would think that’s obvious.