I think the only way Emma would finally accept her feelings for Hook is when Hook’s life would be in trouble. She will realize his value in her life once his life is threatened by someone or something.
Remember in Dark Hollow, when Hook was taken by the shadow, Emma screamed for Hook’s name in fear of him getting hurt. I think her true feelings for him will only resurface once Hook is in trouble. I hope not though.
I think a TLK on Sunday is too early. I am thinking a but further than that episode.