>>57415628Trial Captains have to have completed the island challenge and in order to do that they have to be at least 11. They also retire from their positions at the age of 20. Because of that, we have a hard limit for Mallow's age within the range of 11-20.
That said, while the pokemon world frankly doesn't give 2 shits about child labour, she does work at her family's restaurant. And just from taking a look at her proportions (obviously designed to look older than the likes of Acerola or Lana, while looking younger than Mina for example) - I'd say it's pretty reasonable to put her in the middle of that range.
Anywhere from 14-16 makes sense for Mallow
