To make this short and to the point, this woman seller has severe mental health issues, and very little understanding as to how the E-trade system and business world works.
Just avoid this woman. Don't involve yourself as you will be fighting a useless waste of your own time.
You will only end up frustrating yourself in an attempt to reason with her, as she will only succeed in annoying you.
Move on.
Karma will take care of the rest.