Hmm. My first instinct is to say no, so let me see what I can do to help you with your position before I say why. Zoe's definitely depressed, and so jumping makes sense. She refers to illnesses and death, which would also indicate a possible suicide attempt. The title relates to someone with only a short time to live, which would fit a suicide. There are many textual clues to support you, then.
Why do I disagree? The narration. This is ironic, and follows Zoe. It seems just like her and the kind of jokes she tells and life she leads to talk and talk about death, but just to keep on living.