I feel like such a noob getting stuck in a game like this, but I would be starting the Act 2 quests if I knew where Rin was. I have seen the Slingshot Rins, but not the quest Rin.
Many thanks. I can get back on course to saving the universe now. It would have sucked to explain to the big man at the pearly gates that his universe was destroyed because I forgot to check out an apartment.