Dark Mirror Continuity
Star Trek: Mirror Universe continuity
In this permutation of the mirror universe, Troi ran the Sacred Chalice, a brothel on the burned out remains of Betazed. The Chalice served as the refuge of the last remnants of the Betazoid race after it was nearly destroyed by the Terran Empire.
In 2371, Troi was entertaining the Klingons Lursa and B'Etor when her daughter Deanna threw a bomb at the trio because the Klingons had killed Kestra. Lwaxana died alongside the Klingons. (TNG - Mirror Universe short story: "The Sacred Chalice")