I’m not sure if Tamara would have been able to create the empty heart curse because she wouldn’t have been able to get the ingredients. I can’t remember the exact ingredients beyond the heart of someone you hate and chimera blood? There’s no chimeras in the real world so Tamara wouldn’t have been able to find that ingredient.
I do think it odd that Neal let Tamara go to a storage cupboard where a “stab-happy pirate” was in order to get her bag. As far as Neal knows, Tamara is all sweet and innocent. Neal invited Tamara to come to Storybrooke and he knew her bags were in the storage cupboard where Hook was. Perhaps with everything that was going on, Neal didn’t connect the dots that Tamara would have to go to the storage cupboard to get her bags so she could come to Storybrooke.
If Emma was having the dream, why aren’t Regina or Tamara in the dream?
All magic comes with a price!
Keeper of Felix