"It showed others that they can go back too, that if I can get through it then they can get through it too — to create some more positive memories and try to overcome the negative memories that I have from there," she said.
"I was quite nervous and I did have a couple of wobbles, just because of the entrances we were going in and stuff. It meant a lot for Aaron to come with me because it shows how much support he gives."
She added that he understood what she had been through, having also been at the arena on the night of the attack.
"He made me feel so safe, he didn’t rush me, he was saying, 'If you don’t want to go somewhere you don’t have to'."
A big music fan, Amelia said that Shawn Mendes put on an "amazing" show.
"I’d literally go and see the concert every single night if I could."