Here are some scenes just off the top of my head:
-Basically whenever they're in the kitchen. It shows how even though Frankie is not part of the "clubs" that the other girls are part of, and she feels "unjoined", she actually does have a group of sorts that she can belong to (with Berenice and John Henry).
-When she goes to the freak show. She is afraid of being called a "freak". Shows her fear of others placing a label on her identity which she does not agree with.
-When she's walking around the streets after she decides to join the wedding, she feels a "connexion" to everyone. She's finally found a sense of identity and has supposedly decided her future. Since she's at ease with her identity, she is more confident in connecting to others. She even feels confident enough to help others find their identity (Honey).
-When she is rejected from the honeymoon. She becomes depressed and loses her sense of identity and belonging as she can no longer hold onto the 'future' she has set out for herself in her mind.
-When she becomes friends with Mary Littlejohn at the end, she rediscovers her sense of identity, except this time its very different.