When you leave
Robo behind to restore the forest,
Fiona's Shrine appears in the
Present. You can pick up
Robo here, which will lead to a cutscene for
Lucca where she can save her mother. While this has no real effect on the game aside from minor
Ending changes, it's certainly a nice gesture.
Lucca will have to enter her mother's name,
LARA, as the code to stop the machine that injures her.