Already done that, though the quest ran different from the walkthrough. Sarah was inside on the ground floor and I never needed to give her anything. After speaking with her, Shasha was outside with Tyra, and I gave her the 'gif'. I've been through Sara dates multiple times, and confirmed her relation and love are 2k, which unlocks the aphrodisiac and console game scenes, plus I can visit her in her room after midnight. The rest of the scenes, including the fake tinymon scene, aren't available, and Sara only pouts ellipses at me anytime I try to talk to her at home.