Death represents the ultimate unknown, a territory in which we have no experience and no control. So it is natural to feel fear when we think about death and also natural to avoid those thoughts whenever possible.
When I meet fellow mindfulness teachers I sometimes ask, "What do you think the difference is between mindfulness and Buddhism? If the teacher starts prattling on about brain states and alpha waves and prefrontal cortexs and amygdalas, I will wish him or her the best and quietly excuse myself.
Khandro was universally respected, loved and revered as one of the greatest practitioners of Tibetan Buddhism in recent times, and an inspiration and source of blessings to Buddhist practitioners everywhere.