In the first shot she has her cell phone–so my guess is that Hook or Belle have called to tell her that Neal just burst into Gold’s shop
But why would she look so sad if she’d just found that out? I know her reaction to finding out Neal was alive in 3×6 wasn’t all sunshine and rainbows, but here she’s visibly crying and forlorn. It reminds me of 2×21 when Neal fell through the portal and Emma thought she’d lost him.
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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