GR translation: not so much the changes she felt in air and light

[Mike Jing]

V628.32-41, P641.9-19   The day the rockets stopped falling, it began to
end for Roger and Jessica. As it grew clear, day after safe day, that no
more would fall ever again, the new world crept into and over her like
spring—not so much the changes she felt in air and light, in the crowds at
Woolworth’s, as a bad cinema spring, full of paper leaves and cotton-wool
blossoms and phony lighting . . . no, never again will she stand at their
kitchen sink with a china cup squeaking in her fingers, its small
crying-child sound defenseless, meekly resonating BLOWN OUT OF ATTENTION AS
THE ROCKET FELL smashing to a clatter of points white and blue across the
floor. . . .

What does "not so much the changes she felt in air and light" mean exactly?
Does she feel the changes or not? And the appearance of "a bad cinema
spring" is not actually her own impression, is that correct?