Do the office doors lock? I have a solution that probably won't get you in trouble with management for stirring the pot: stay late and sabotage her phone. Make

Do the office doors lock? I have a solution that probably won't get you in trouble with management for stirring the pot: stay late and sabotage her phone. Make sure to wear gloves, and do it in a way that's really hard to detect, such as opening it up and carefully cutting a trace on the circuit board which renders it inoperable, but is impossible to spot without someone else carefully examining the board for defects.