Rin is dead. Kakashi said himself everyone close to him is dead. Also when he died obito, rin, and minato both pulled him up before he talked to his father. Showing that all of them are dead. :|Also, it makes no sense how he could have been powerful enough to take on minato without any training or anything. Things just don't add up.
Also, wouldn't he want his eye back if Kakashi had it? there were certainly so many opportunities.
On the other hand, we still have no idea what happened to Kakashi and Obitos female partner.