Unfortunately in my second (and imported) ME2 Tali decided to die at the suicide mission. She did not in the first (everyone survived), but there were other choices I liked better, so I carried with this import.
I think I got other points in the 5 point goal, nevertheless peace option never came up.
Anyways, the Quairans were the bad people in this matter, as sad as it was, they had to go. :(