If she wasn't holding a gun or knife then she would have had to retrieve them from her person or somewhere nearby and then use them in deadly fashion fairly quickly.
I.e., no time for all the struggling, chasing, shooting, stabbing, cutting and slashing in just 62 seconds.
She did, however, inflict more than 30 knife wounds and shoot Travis in the head in that amount of time by striking furiously and surprisingly first, thereby slowing him significantly and then finishing him off directly.
What didn't happen, of course, was the foot-chase, and not much of a struggle, either. Only those defensive wounds when an already-dying Travis was attempting to fend off the knife of the murderess.
Did she use a towel, blanket/comforter, or a pillow for the silencer when "the gun went off" and Travis "passed away"?