Uneven terrain. I bet she rolled her ankle and shattered the bones like glass. It would be funny to cut to a nuclear explosion at the moment of impact.

What about the rocks at the bottom of that body of water? Are they okay?

Reminds me of watching a similar scene except the whale tried to use a rope swing. It turns out you need to be able to hold your own weight on a rope or...

The leg doesn't give up just like that, she broke something 100%.

The fish it landed on got severe concussion

What about the pond life? A nuke to them.