There are other factors than can reduce her sex drive. Hormones being out of balance. I think low estrogen, depression, quality of food (i.e. low nutrition). Drugs and alcohol may also reduce sex drive. If you can rule out the physical then it is just emotions.

Spending more time with her may help that. Or doing more intimate things beside sex. A sensual massage is very intimate. Cuddling or talking may also be an option. Chances are if she feels like she is being ignored, then sex probably is on her priority list. Nothing turn my wife off more than me not making any time for her, and then wanting sex. I say you should talk to her and work on getting more connected.