Board Thread:Spoilers!/@comment-10663213-20180515200554/@comment-27060727-20180516173825

Based on the promo, Snowing only shows up when Henry and Regina need help.

So I guess Robin and Alice were only going to Storybrooke for Zelena to begin with? Maybe they wanted to keep the potential timeline damage minimal and were just planning on approaching one person.

Which also helps explains why Emma and Hook are nowhere to be seen when they go to SB, and the excuse for their absence will be delivered by Snowing when Henry asks or something.