Peter
Treehouser
That's her problem. I bet she will uncuff her self lickety split if you get started with her cuffed to the tree.
One could always ring bark the far side of the tree while said protestor is still attached.
A company I used to work for removed a Beech that had a protestor camped in the canopy for 2 weeks. Unfortunately for him we arrived on the day he decided to come down and attend a dentist appointment! Didn't feel too good about the job personally, I think I would have walked if it was my job.