I was having trouble with it, but she eventually achieved it.
My sim:
Handiness: 5
Programming: 6
Logic: 0 (I need to give her some logic)
I had her upgrade her droid and it did the scramble protocol. It scrambled the tower, but it did not register on the mission board.
I sent her back to the Resistance territory and then sent her back to the First Order territory. I let her stand where she arrived and I clicked on the tower and selected the scramble option. She ran to the tower and scrambled it, no problem.
I sent her back to the X-wing and she finished the mission.
