Wow, very unfortunate circumstances. Generally it is very difficult to remove a review unless it violates one of Airbnb's content policies, which can be found here: https://www.airbnb.com.au/help/article/546/what-is-airbnb-s-content-policy
Though, you can contact Airbnb and explain the situation. You'll probably need to prove that it is the guests fault, so show evidence of trying to reach out to the guest on Airbnb on why the guest hasn't arrived yet.
I haven't been able to find the review on your profile, but you should also reply to it and explain the situation there.
Good luck!