Well, it's either the crazy idea works, or they think up a less crazy and more effective one in five seconds, or they splat. Or... bounce, or whatever a survivable splat looks like.

And, anyway, if anybody could make it work, she could! Of course, everything was gonna be just fine!

"One, two--" she matches Diamond's countdown, curls her legs to plant her feet against the other Cures, takes one more look to measure her jump. Oh, this had better work! "Three!"

And she pushes off against Diamond. Not at her strongest, but enough to change her path to one leading to a safe, if... slightly ungraceful and tumbly, landing on one of the rooftops.