Hi.
She was not 7, she was like 2…
She was born in 2549 which places her 3 years in Halo 3. She will turn 8 in November of 2557.
In Halo Legends she starts off the Origins story with “when I was born, 7 years ago…”
So that just leads me to believe that Halo 4 starts in that SAME YEAR as the Origins story! Pretty sick stuff 343i… Pretty sick.