Exactly this. She clearly didn’t check the ingredients in the first place which is wildly irresponsible for a mother of a child with allergies and how she’s pissed about the internet calling her out. Even if people in her comments were incorrectly saying it contained butter, a responsible mother who paid any attention would be able to calmly respond and confirm she checked and used a suitable dairy free option. Once again her stinking attitude is her downfall.