There was another tweet of hers where someone mentions that the ‘Captain Swan’ is “killing me” and she replies:
“Keep watching on the Swan front, you might be surprised at what happens”
Hook is very unpredictable character, I’m really hoping he does help Emma which, from the tweets and interviews, looks like he will.
When I saw Emma locked in the cell and Hook get up close to her my first thought is that he slipped her something to help her escape
I thought that too, and in the background you can see Cora and it looks like shes watching him intently. This means that she doesnt trust him and she knows of hes feelings towards Emma and knows that he will most likely do something to help her.
also as the bars go down, you can see Hook who looks like he cant even look at Emma. Theres a reason he is looking like that and is fiddling with his Hook. The directors have a purpose for where the charcaters stand and theres a reason he is fiddlng with his Hook, because i have only ever seen him do that once- when Cora controlling Aurora. You may think im stupid and over analysing this, but i think its the small things that really show how the characters are feeling. So the guilt may further motivate him to help Emma.