Lisa Straube mourns the death of her four-month-old son

Reality star Lisa Straube's four-month-old son, Xavi, has died from sudden infant death syndrome. An autopsy confirmed SIDS as the cause of death. The parents are grieving but find solace that Xavi did not suffer and passed peacefully in his sleep. Straube, 25, shared her grief publicly, writing a farewell letter to her son and expressing her devastation over the loss of her second child.