When Layla joined Erin, she had brought her gear, along with some food pills and water. It was the bare essentials, just enough to travel around the shelter.
However, when she checked for her supplies in the mini valley, Layla found that everything had been taken. Her beast arrows, her bow, her one water bottle and bag of food pills.
Erin continued to hold a makeshift shadow roof over her head. It worked as a way for her to stay out of the sunlight, but there was a bit of a problem if she used it while she fought. While she still had her umbrella, her rattaclaw chest piece had been useful because it completely covered her arms, allowing her to extend her sword beyond the shade of the umbrella. But now? The chest piece was too broken to cover her arms anymore.
Extending the shadow above her head was an option, but at that point, she might as well just use the shadow void skill.
