Switch over the transition help her conquer it
“Switch over the transition” is a term that means skating with your opposite foot forward (switch) over an obstacle (transition) like a ramp or kicker.
Here, “conquering” could represent overcoming the skateboarding obstacle (landing a trick) or a real life obstacle (her suicidal ideations).
Note how Lu uses the words switch and transition to both refer to the girl’s changing feelings while keeping with the skateboarding references.
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