Complex sentence: Once the tree has reached 10 Metres, Deemo and the girl look at the tree from a distance to see how tall is has become, missing her home, the girl the collapses and cries as Deemo comforts her.
Split into simpler sentences: Once the tree has reached 10 meters, Deemo and the girl look at the tree from a distance to see how tall it has become. Missing her home, the girl collapses and cries as Deemo comforts her.