Even though you have revealed in the comments section that you have broken up and switch your material around to fit the timeline, I still think it works great. I helped my mother-in-law with her action thriller novel and she cuts scenes abruptly all the time and it works really well. Always getting a glimpse into a variety of facets and perspectives for the circulating characters, all who play their own individual pivotal roles in the plot. I wouldn't worry too much about the structure because what you've written just jumps off the page and sucks the reader in. Definitely one of my favorite chapters.

I can completely relate to what Anna and you have experienced and then some. Of course her first attempt would be a complete failure and learning experience, mine was too! Hopefully she'll learn how to defeat them effectively with the brothers' help. Amazing chapter my friend. Things are picking up nicely.