Personnaly I think when Seeto refers to the Rayya I beleieve that his sister may have been Tali.
Extremely unlikely, seeing as Tali was born on the Rayya, rather than joining the crew as Seeto's sister did. In addition, Tali tells Shepard during ME that she was an only child. (Also, please don't forget to sign your name when editing the talk page!) Bakageta-Koto 01:48, March 14, 2010 (UTC)