Now I know you thought my edit wasn't descriptive enough, but I felt it was described pretty accurately in the first part of the article when Qrow saves Amber, and that telling everyone again would've been redundant. And I try to avoid redundancy whenever I can. Anyway, hope this helps, and I hope you enjoy the upcoming episode, I know I will.
My problem is it was history, describing an event in which the character colored what exactly the event was.
While it is true to an extent to state that Qrow said the infiltrator was the same one who assaulted Amber, that is not what Qrow was implicating in that scene with his word choice, which your description of "Same one who assaulted Amber months before" fails to convey.
His choice of words "also responsible for" indicates she is the one responsible for both entire assault(which was actually an assault by 3 people, which is something your edit failed to account for) and her specific condition, which was actually not caused by the assault, but rather by the bug/glove(which again is not accounted for in your edit wording)