It is certainly a case of selective filtering. The doctor definitely mentioned the weight, but they don't see weight as a problem so it gets filtered. Fats think fat children "will just grow out of it" or "they are just a big boy" or they are "not that fat." So when a doctor says, "She's fine, but needs to lose some weight," it goes in one ear and out the other. I genuinely believe the mother has no memory at all of the doctor mentioning the weight. It's the same with all of them. It's how they say, "I'm perfectly healthy except I'm on three prescriptions" without hearing the contradiction. Weaponised denial.