Hey,
I'm grabbing at straws here so I'll add this suggestion/idea/thought.
I'm wondering IF, its the design of the cage for her that gives her a spot to push and get to traction. Maybe you should try to find a used Boaphile or Pro-Line or Vision cage and just try it. Sure its a waste of money of it doesn't work, but may end up worth it if it does.
I'm at a loss, other than building your own custom cage, I can't come up with anything.
