In the following scenario, what is the likely reason that Megan's mother died at the moment she did?


Megan has spent most of the past several days with her dying mother. Other family members have been there much of the time as well. Megan leaves the room briefly for a break. A hospice worker goes to find her a short time later. She tells that her mother has passed. Megan feels that she should have been with her mother when she died.