Unless shes using a microphone from the 80's this is just nonsense. All modern mics have a flat square pack, about the size of a deck of cards, but half the thickness. Nor could the cord reach to your ankle, they barely reach your lower back.

And being way overweight, she could hide it literally anywhere.

And being in that big chair with pillows she could have simply sat it next to her. Its not like she was up walking around. Literally nothing about your comment makes sense.