Yes but nobody knows that but her, I believe.She bypassed it entirely; direct quantum/subspace (I forgot which) are basically unlimited free energy in a way all those stupid over-unity devices can only dream of. When he says her phone has really great battery life she is not kidding.
Cracking fusion when you have room temperature superconductors, quantum computing, and a significant and cheap way to tell gravity to do what you want....
Also, fusion is probably easier to sell than "magic power from space-time" as people will kind of want to know things like "Does this run out?" and "Will this cause me to get cancer in my brain and also space-time" and "Can you make a blue box bigger on the inside" (and when only one person on the planet can answer that question, and about 5 others can sort of follow along with the explanation, that's gonna be a hard sell), and also it's probably pretty easy to just repurpose the infrastructure you have to support fusion plants. Especially with room temperature superconductors to get power wherever it needs to go. (Plus, you don't have to give out incredible energy dense, highly concealable, power sources to people who might figure out how to make them go ker-blam)
That shouldn't be a hard problem for engineers to solve, as someone has magically removed a ton of complexity (room temperature superconductors), given them computers that are insanely over powered so modelling complex geometries is easy, and oh yeah they can screw around with gravity enough to create powerful shearing fields.