When she sees that he has been murdered and that his work is missing, she realizes she is the next likely target. Her only chance is to complete the research and post it to the Internet, so killing her would no longer serve the purposes of a cover-up.
When she observes his death and finds his project is gone, she understands herself to be the next probable victim. Her sole hope lies in finishing her research and uploading it online; then killing her would no longer serve the cover-up purposes.