From the angle we're looking at you wouldn't see if the elbow is bent or not. Looks to me like the elbow of facing us. If that's true you wouldn't see a slight bend because it would be coming toward us and we're looking at it in two dimensions.
That being said, Finch probably keeps her arm straighter than any other top-level pitcher I've seen. She seems to throw more with the shoulder than others. Maybe a result of using the Finch windmill?
Compare to this video of Michele Smith at 0:15 seconds. It's an artsy view from below, but you can see a definite bend in her arm.
YouTube - Michele Smith Teaches Advanced Pitching Promo
The attachment shows a better view of this too.
That being said, Finch probably keeps her arm straighter than any other top-level pitcher I've seen. She seems to throw more with the shoulder than others. Maybe a result of using the Finch windmill?
Compare to this video of Michele Smith at 0:15 seconds. It's an artsy view from below, but you can see a definite bend in her arm.
YouTube - Michele Smith Teaches Advanced Pitching Promo
The attachment shows a better view of this too.