Hi Pinhead, Strange what she said about letting you date someone else if you want. You've often said she has little self esteem, doesn't consider herself good enough. Maybe she thinks you've started to be interested in others, in the idea of someone else, even. From my point of view, as a woman who has fairly low confidence, what she said sounded like a desperate plea, clutching at straws. Your W sounds like someone who's unhappy in herself, with or without you. Maybe she's just so worried about material things and the future that she can't relax and feel ANY desire and lightheartedness. You two have been through the mill - cancer treatment, IVF treatment, debt. Maybe she can't get beyond that to any feelings of lust.
Maybe moving out will help you both to another perspective. NCU
She had a bout with Bell's palsy after our first daughter was born; literally got it the day of D8's delivery. Bell's palsy basically shuts down the nerves on one side of your face. And understandably, she was very affected by it. Definitely compounded a lot of her self-esteem issues.