This is a good age to start an ongoing discussion of death. If you're fearful of doing so, she will pick up on the negative emotions (aside from bereavement) surrounding the topic, which would be unfortunate. The desire to protect a child from the subject is understandable, though.
Children begin to understand death around 4 years of age, but have a lot of misconceptions, most notably about the permanence of it. Your daughter, however, is at an age where her questions about death should be answered honestly, taking your cues from her. She may have lots of questions, or she may have few. Again, like most subjects parents are hesitant to discuss with kids, take your lead from her. Concepts to anticipate and prepare for are elucidated below.
There are 4 components relative to children's understanding of death: (a) the irreversibility factor, (b) finality, (c) inevitability, and (d) causality. These 4 components relate directly to the developmental level of the child at the time the death occurs.
This is a useful article on ways to approach the discussion with different age groups.
At your daughter's age, she may believe that death only happens to older people. There's no reason to disabuse her of this belief if she isn't ready to hear otherwise, but don't mislead her. If she asks if she can die, answer honestly: that every living thing- including people- die, but it's uncommon for someone her age to die.
"Children over the age of 7 or 8 understand the concept of death cognitively but may believe only the elderly or very sick will die (Webb, 2011). Older children are more able to talk about their grief than younger children but still need simple, concrete explanations, reassurance from those around them, factually accurate answers to their questions, and help from surrounding adults to find the words to describe their feelings (Goldman, 2004; Moody & Moody, 1991; Willis, 2002)."
Be open to all her questions. If she's confused when she sees the next episode, it's just time to extend the discussion.
The Grieving Process in Children: Strategies for Understanding, Educating, and Reconciling Children's Perceptions of Death
Overcoming Obstacles: Exploring the Use of Adventure Based Counseling in Youth Grief Camps