This is the reason why I prefer riding trails over roads but this woman seems to have a death wish. While she might be legal to ride the center of the right lane, that doesn't mean she should. She is not only endangering herself but everyone that is sharing the road with her!

When you see cars and semi trucks passing her on the right shoulder, that tells me it is plenty wide enough for a bicycle and that is where she should be riding. I imagine there will be some debris from time to time but it does look like there is enough room to ride around it.

In short, whether she is in the right or not, she has made herself a public nuisance and should adjust her route, lane and attitude. It's people like her that give all cyclist a bad public image. I know others feel differently and that is great too. I'm just expressing my thoughts on the information provided.