In your dream, death means change. The person in your dream represents an aspect of your personality that has changed. Look at the deceased person's personality as you remember it. The traits you saw in her will mirror those within you that have changed. For example: if she was a calm person, you may find yourself nervous or fidgety.
The dream shows your contemplation over how you've changed or about what might be missing and where did it go. Look over your life and see where you may have been wondering about how things are and a possible step forward from where you're at, mentally. Hope this makes some sense for you.
God Bless,
Michael