Here is the part she already knew. Every migraine sufferer knows that webbing. You have pressed it a thousand times.
It works for 4 minutes, then your hand cramps, you stop, and the migraine wins.
That was the whole problem, and nobody had solved it. The point works. Pressing it by hand does not last. The pain needs steady pressure for hours, and a hand cannot give hours.
The trials measured something different: continuous pressure instead of a squeeze on the floor. The over-firing nerves settle.
The signal that turns an aura into a 4-hour attack never gets loud enough to take the day.
But there was one problem... a finger cannot press itself.