Yes. Ellie (who looks oddly like Stephanie Davis) is a hallucination only she sees. She says it's an old mate from juvie, but some fans think it's a dark version of herself ("Belle" "Ellie").
What do you think of the Nicola and Dan story? I know some hate it because it's an affair plot or because they don't think she'd ever go for Dan, but so far I'm enjoying it. The story clearly isn't about burning passion, it's about Nicola's fears and doubts about herself, and her inability to express them to Jimmy. It's sort of taking Nicola back to her first run on the show, which I'm glad about, whether it's intentional or not.
I also keep seeing some person on that Digital Spy forum claiming Emmerdale is ripping off Sally and Tim on Corrie. I get so bored with that type of nonsense. Their stories have nothing in common at this point.