Yeah man. That always sucks. I can only imagine Being a provider definitely isn't easy either. Imagine trying to get your sexy on to please someone when you are feeling ill, especially if you are a woman. Women are emotional and mental creatures, it is tough for them to get going if they ain't up there 100%.
I have heard her BBBJ is ok, maybe with some guidance she can up her game. Tell her to suck and use that tongue.