mako mori's age was something i was puzzling over while rewatching the movie, after the clear timeline of raleigh's age given in the opening monologue
Based on the information in the film, Raleigh is around 27 years old: age 15 when the first kaiju landed in san francisco, age 22 seven years later when he and yancy fight knifehead, and approximately 27 in 2025 when he meets Mako Mori
Mako's age is a little more nebulous. Her canonical age is given on the wiki as 22, which would have made her 13 when Pentecost defeated Onibaba in 2016. However, Mana Ashida, who played little Mako, was 8 years old at the time of filming. While age and appearance is not an exact science, particularly for children, based on her appearance and behavior in the flashback, I would find it hard to believe she was older than 10, which would make Mako at most 20 or 21 in the film.
Based on how young Mako appears in the flashback and the date given for the battle with Onibaba, I would hazard that Mako Mori is likely somewhere between age 19 and 21 when she pilots Gipsy Danger. That tracks with both her respectful/deferential relationship with Stacker and his reluctance to allow her to pilot a Jaeger, as well as her intense focus on getting revenge for her family; as well as adds an interesting perspective to her goodbye with Stacker where he passes the responsibility on to her.
TL;DR based on the film, Mako Mori is likely somewhere between 19 and 21 years old at the time she piloted Gypsy Danger and saved the world at great personal cost. In effect, the end of the kaiju war was also the end of her life with Stacker and the Shatterdome, as well as what remained of her childhood.
