DeWalt, Milwauke, Makita, Bostitch, Porter-Cable?
Black & Decker?
We know the make of the vehicle she drove in (Mercedes)
Makita
At approx 13 sec into the video, a quick view of the tool.
12-Volt MAX CXT Lithium-Ion 3-3/8 in. Cordless Circular Saw ???
At first, I thought it was a sawzall.