The actress, who plays Ginny Weasley in the series, told MTV News that it was strange filming the epilogue on the platform at King's Cross Station because that was where she was initially seen in the movies.
The final moments of the saga will see Ginny and Harry (Daniel Radcliffe) meeting with their old school friends in the future as they leave their own children at the Hogwarts Express.
"It wasn't my last scene, but it was one of my last scenes. That's where I started the journey of Harry Potter - on the platform - and then to see the girl who's playing our daughter was just psychologically, it was very weird, because she's the same age as me," she explained.
"It was literally having a whole cycle of the journey."
She added that she hopes the epilogue - which takes place when the characters are in their 30s - is "well-received" by the fans because of the effort and "energy [that] went into making that moment perfect".
It was previously reported that the real-life girlfriend of Wright's co-star Tom Felton (Draco Malfoy) will also appear in the epilogue as Malfoy's wife.
Harry Potter And The Deathly Hallows: Part One is released in November.