I have a question about the Ororo Munroe of the XCU - Mainstream Timeline.

In the movie "X-Men" (2000), Sabretooth tries to suffocate her. It looks like Ororo cannot use her powers correctly because the hold on her neck (she couldn't breath), so she was barely able to summon a lightning from the sky.
Is it me or the Movieverse STORM cannot create lightnings from her body, but just absorb them from the sky and channel them? Am I right?