Looking for a sci fi book with a young female protagonist and her indestructible robot Kilimanjaro (called Kili). She is forced to leave her planet (which I think is a moon) and eventually travels to a station orbiting Earth, where mankind awaits first contact with an alien species. I can remember some scenes:
The prologue is of a room full of students in an offworld university. The door is kicked down and several gunmen open fire on the students, killing them.
The protagonist gets incarcerated (on Mars?) and her robot - Kili - bashes down the doors of the prison to rescue her.
When the aliens first arrive on the space station near the end of the book, a member of an insurgency opens fire on the alien diplomat in an attempt to sow distrust. One of the aliens jumps in front of the diplomat and takes all of the bullets, killing it.
I hope this jogs somebody's memory... I've been looking for this book for like 20 years.