The Jungian perspective is that your dreams of death actually represent parts of you dying off, which isn't necessarily a negative: that can refer to dysfunctional parts or transitions. Jung postulated that individuals in our dreams represent aspects of ourselves, not really other.

In terms of trauma, PTSD comes with the symptom of nightmares relevant to the trauma, so those dreams can have more literal elements as well.

I agree though, that sometimes dreams are straightforward. Other times though, dreams of someone dying may be wholly symbolic of other struggles, or even growth.

Anyhow, you might want to know your therapists perspective on dreamwork when you discuss, one size doesn't fit all.