The meaning of “enveloped in cotton” is the feeling of being trapped.
In literature, Symbolism is used to characterize by the use of an object to represent something more than it literal meaning.
There are a couple of pronouns in this sentence - she, us, both, and your. However, only one of these is a third person personal pronoun, and that is she.
Us is first person plural, both also refers to first person plural, and your is second person singular.
