Complex sentence: In the final scene of the game, Lara uses Excalibur and the Stone Dais to open up the portal in where she seemingly talks to her mother, however, it is then shown it is her mother talking before she disappears.
Split into simpler sentences: In the final scene of the game, Lara uses Excalibur and the Stone Dais to open up the portal in where she seemingly talks to her mother. However, it is then shown it is her mother talking before she disappears.