The cretin & scumbag Holder has a date with a tribunal. Let him run his vile mouth—it's all he has left. Just consider it his "last words." He'll keep on until he doesn't. Not only is it twisting him into a pretzel to know that justice is imminent, but it's even worse for his ilk knowing that our side doesn't just have the nitty on their deeds, but we are all immensely enjoying watching him/them stagger toward the gibbet while braying in terror like the failed jackasses they are.
Maybe she was just listening on the shortwave.
One kind of HF antenna that is almost never seen, but is physically small (3-12' in diameter), is a magnetic loop. It could be inside the house. But people just don't use these. They are too "weird" to build, deploy, and tune, and exhibit extremely high voltages that make some hams uncomfortable.
Yes there are stealth antennas such as a wire running around the house under the eaves or inside the attic, or the use of a rain gutter as a transmitting antenna, or a flagpole concealing a vertical antenna, but I just do not see it.
I seriously doubt she was transmitting outside her license privileges. Maybe she was sending data/voice short-range over VHF/UHF which is permitted for the technician license class.