Falere

Falere is one of the three existing Ardat-Yakshi and the youngest of Samara's daughters. At a young age she made the decision to live out her days in the Monastery with her sister Rila while Morinth escaped.

Mass Effect 2
Falere was first mentioned by Samara when she explains to Shepard that the three Ardat-Yaski are her daughters; she does not make an appearence.

Mass Effect 3
Falere makes her offcial appearence during the mission Kallini: Ardat-Yakshi Monastery when the asari send a distress signal to Shepard. She can be seen fighting off a Cannibal. She will defeat it and then have a conversation with you about the Reapers trying to turn all of the Ardat-Yakshi into Banshees, which answers the question of why they would bother to target an Asari monastery. She will ask you to save her sister, Rila, from the Great Hall. Falere will learn about the bomb and rush on ahead of you to save her sister by herself. If Samara survived the Suicide Mission in Mass Effect 2, she will be here to assist Shepard. Falere will then be attacked by Rila after clicking on the bomb, to which she will attack her during a brief cutscene. After this one of Shepard's squadmates explains that the Reapers may have already begun indoctrination on Rila. After another fight, Rila will find the detonator and insist that Falere leave with Shepard while she stays behind and sets off the bomb. Falere will fight, but Shepard will drag her to the elevator. Rila will then be attacked by several Banshees, which she is unable to hold off. One will pick her up, presumably to complete the indoctrination process, but in a last show of strength, Rila will declare that the Ardat-Yakshi are not the Reapers' slaves and will press the button on the detonator. Once she makes it outside, Falere will complain to Shepard for allowing Rila to die through anger and grief. If Samara survives, she attempts to commit suicide in order not to break the code and kill Falere, this can be stopped with a Paragon interrupt. Falere declares she will stay in the monastery, and Samara joins the war effort. If Samara does not survive, you will then be given the decision to either let Falere stay on the planet, where she promises that she will not be alive if the Reapers come again, or to kill her yourself.