She got a little bigger

Given her eating habits not surprising

Nope. Anymore chips her gut will pop out of the shirt.

She has to be the fattest Braxien in Pokémon existence. In fact, I’m pretty sure she might be close to being larger than her Delphox mom was a year ago. If she keeps this up, not only will she be bigger than her mother’s current size; but she’ll be as larger or larger than a Snorlax

Snorlax level appetites do run in the family and she's not one to fight against it.

Ironic given she’s a fighting type Pokémon and can’t even fight those genetic DNA urges. Though she could do Sumo wrestling in her future if she wants to take advantage of her gluttonous genetics and win Pokémon battles. Or she could lean full into her DNA and compete in eating competitions. Either way, she’d be unbeatable and not be able to be lifted up, not that she could at her current size anyways.

She wants to be a Rescue Team explorer so she's taking a special training course where she can be mobile while still the size of a Snorlax

That’s a good career choice tbh. And at least she’s prepared to handle being the size of a Snorlax once her mobility sees a bit of decline and find a way to overcome that.