I would go along to one of the major BT centers just to satisfy myself that I'd covered all angles.
I'd suggest if not MD Anderson (which is meant to be excellent), one of Duke, Dana Faber, Johns Hopkins, or UCSF. I'd do that in addition to going to the NIH (since that's free anyway).
Sounds like she's on the 'standard' treatment. There are things to add onto the standard treatment that can help though - like Accutane (most of the work on that was done at MDA), Celebrex, or chloroquine.
My philosophy was that the mean of 14.6 months following the gold standard treatment wasn't good enough so I wanted to do more than that.
You are more likely to get an oncologist who's willing to 'play' a little bit with a cocktail at a major center in my opinion.
Has she been tested for MGMT methylation or EGFR expression? That can help guide chemo choices down the line.