She could have been set-up by her co-workers (male)
Years ago when I was a volunteer fireman, I went to an apartment fire, apartments on the right of the entrance were involved.
To the left of the entrance, all by herself, was a fireman (fireperson? firewoman?) pouring water into a second floor apartment. Her fellow firemen set her up. True, she should have noticed that she was all alone there and there wasn't any smoke coming out of the windows in her area...