("Bleeding Through"), Once the second curse is broken, Mary Margaret is rushed into the hospital while Emma and Regina enact a protective barrier to keep Zelena out. Outside, Mary Margaret watches the two drive off in Sean's truck and runs into David. ("Murder Most Foul"), At the loft, Snow finds out Emma is now engaged after Hook proposed to her and excitedly looks forward to telling David the news, although Emma wants to hold off on planning the wedding until Gideon is dealt with. She then leaves after Emma requests a moment alone to say goodbye to Robin. Mary Margaret's outfit in the first nine episodes of the, The floral dress Mary Margaret wears for her date with, The necklace she wears in the first half of, The key necklace was chosen to represent the key that, The ensemble outfit Mary Margaret is wearing in, The dress Mary Margaret is wearing during. When she enters, one of the shape shifters, Quinn, attacks her for intruding, but Red Riding Hood convinces the leader of the tribe, Anita, and the other members of the pack that Snow White means no harm. After Zelena helps Arthur tether Merlin to Excalibur, he summons the sorcerer, ordering him to send the heroes away. Suspecting Emma is responsible, Hook, Regina, Robin and Belle break into her house to investigate. She also takes the role of Perseus from Greek mythology. Mary Margaret witnesses Regina being thrown into the clock tower by Zelena, who later flees on her broomstick. From across the street, they spy on Cruella, Maleficent, Mr. Gold and Regina leaving the loft. From reading it, Henry is hurt that Regina does not want to see him. She begins strangling her as an act of vengeance, though Red Riding Hood shape shifts to defend her friend. Through the other half, Mary Margaret, Emma and Regina inform Henry that they are coming to rescue him. During the wedding party, she sweeps Ella into a dance and praises the princess-to-be for changing her life as well as setting an example for others. Species:

In the woods, Snow leads her allies to the monster using her tracking skills. Snow begs him not to dig up the past by seeking vengeance on whoever killed his father, and to focus on the life he has now. Left in charge, Anna takes baby Neal and puts him in a crib. Suddenly, a shocked Emma returns home, revealing Neal died during a confrontation with Tamara, as her parents console her. ("Dreamcatcher"), After informing Mary Margaret, David, Hook and Belle about Emma's slip up about Merlin, Regina explains her plans to use the Crimson Crown to talk to the sorcerer, though they need Arthur's help enacting the spell, as only someone chosen by Merlin can use the toadstool. ("Dark Waters"), During the night, Snow wakes up in the woods, after being teleported there by the Queen, who gives her a vial of Acheron water, which she'll destroy the town with if Snow and her husband do not forfeit their hearts to her. Emma, accepting magic as part of herself, creates a fireworks display.

In her haste to escape, Snow White drops the ring. ("Pilot"). Snow asks Ruby if she can think of anyone, to which Ruby recalls Dorothy only ever loved her deceased Auntie Em. [image begins] if you need me, I'll find[image begins] Snow wants to[image begins]w replies. Upon parting ways from Blue, Snow lets down her guard around a stray dog, with the Woodcutter capturing her afterward and placing her in a locked cart. She clasps it on Snow, which transforms her legs into a tail. They head to the pawnshop where Emma is given a dream catcher to look into the memories of only witness of Archie's death, Pongo. The next morning, she offers to refill Prince Charming's water canteen, but actually makes off with his ring. The couple resume living together in the apartment. Shocked, Mary Margaret wonders what'll happen now that Will is on the loose. On the journey there, guards posted at a bridge refuse to let Maleficent and her companions cross. Can communicate with and understand the language of birds. In private, Mary Margaret is apologetic towards Emma since they assumed both of them weren't going to be back until much later. Regina uses this advice for herself and decides to have hope that the life she has now will get better in the future. Shocked, the couple recognize the man as the "peddler" they once helped in the Enchanted Forest. Johanna rushes to get a doctor, and after some examination, the cause of the illness cannot be pinpointed. Snow suggests she doesn't have to make a decision now, and can wait a few trimesters until the baby is bigger.
Mary Margaret wants to hold onto the good memories they have together rather than continue to make bad ones. ("Best Laid Plans"), While nearing the end of her pregnancy, Snow's worries still linger on what the Queen threatened to do to them. Regina relates that Tinker Bell lost all her fairy powers a long time ago and can't help infiltrate Pan's camp. She then advises Snow to assert herself as the person she is now instead of trying to be the person she once was.

In the evening, Snow White walks in on Regina kissing a stable boy, Daniel, and runs off to inform her father.

Since either Emma killing Gideon or Gideon killing Emma will result in light magic being snuffed out, Snow suggests battling Gideon long enough to buy time for Mr. Gold to retrieve his son's heart, but Emma believes there's no stopping him.

Later, Snow and Regina comfort Emma when she finally allows herself to cry over Hook abandoning her when things got tough between them.
Female ("Pilot"), On the school grounds, Mary Margaret sees Emma walking Henry to class. After Henry leaves to take Emma, with Hook, to a place she can recuperate peacefully, Regina relates her suspicions that Emma was likely after the dagger and prepares to hide it, but David objects, stating that Arthur can help Emma if they give him the dagger.