Nephthys is a spiritual or psychic woman, who talks about what is hidden and tells us about things that have yet to take place. She’s sensitive to her environment and is able to feel things that have yet to be revealed to the world in general. Having her here would imply that observing your spiritual side may be an excellent way to feel more grounded.
Given Nephthys’ association with a beautiful singing voice, it’s possible that singing may form part of this grounding as well.