Easement means they have access to their property on her property.
I had to pay for every piece of my electrical equipment when I built my house. Every foot of wire from the power company’s pole, the underground conduit, the meter, the ground, the wiring, the entrance boxes, the breakers——which part of that do you think they have an “easement” on?
But not the right to push her aside. It is vital to note that she did not reveal the weapon until the installer "kept pushing her out of the way," i.e. physically assaulting her.
If a power company employee manhandles me on my property, I'll ruin his day if I can. And it won't involve a lawyer.