Momoko Togame jumps into space in seconds. The closest distance to space from the surface is 62 miles (or 99.779328km).
T = 99.779328km/1.23s
= 81121.4049/340.29
= Mach 238.389036
Let's also get kinetic energy. She is 16 years old, and the average mass of a 16 year old Japanese girl is 52.6kg.
KE = (0.5)mv^2
= (0.5) X 52.6 X 81121.4049^2
= 1.73071945e11 joules
= 41.3651876195029 tons of TNT
Final Results
Momoko Togami jumps into space (speed) = Mach 238.389
Momoko Togami jumps into space (energy) = 41.365 tons of TNT
And that's not even opening the can of worms that is the attacks name; Edge of Universe.