I have cameras watching my tortoise with motion detection which sends a notification to my phone so I can keep regular checks on him..they also have motion tracking too and also live streaming to a local pc or over the net..they are cheap enough nowadays and may help keeping an eye on yours 👍
Her shell looks pretty good and apart from the abscess, looks quite healthy. With a visit to the vets and the changes you know about, I'm sure she will be very happy and content 👍