@Rainbow – I seriously doubt Rumple blames Emma for Neal’s death or that he even remembers her journey to the past. I think it’s more the case that since Neal died, he doesn’t care for anyone other than himself and Belle. Emma was always a means to an end for Rumple to get what he wanted: his son. With his son now gone, I think he now just sees Emma as leverage against Hook, rather than as the mother of his grandson or the woman his son loved.
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"That’s how you know you’ve really got a home. When you leave it, there’s this feeling that you can’t shake. You just miss it." Neal Cassidy