Who is Mirah Lapidoth from Daniel Deronda and what is their importance?

Mirah Lapidoth was taken away from her mother as a very young child by her father. She grows up on the stage, acting and singing parts dictated by her father. When the situation becomes unbearable, she runs away, hoping to find her mother and older brother. When she realizes the search is nearly impossible and that she has no money and no way to survive, she prepares to drown herself but is interrupted by Daniel, who takes over as her provider. She is eventually reunited with her brother, thanks to Daniel, and lives happily with him until his death.