Stella hated to admit it, but she had panicked as soon as she had realized that the dwarf had been missing. She had looked around for the dwarf, hoping to find him soon, but she had no such luck on her side.
But he had not been outside the forest. It had been desperate times that forced Stella to use the location device to try and find the dwarf. And she was lucky that she did so because she would not have realized that the dwarf had run inside the valley once more.
Once she had confirmed the dwarf's location, Stella had no other choice but to go after him. She was tasked with protecting him after all.
So, Stella ran into the valley as well. She quietly moved around to try and find the dwarf once more. She finally reached the clearing and had a clear view of Cardin's back.