TedStixon

Correction: Just to add to the conversation, while I'm not a woman, I used to weigh about 350 pounds before I started a serious diet plan and lost almost 100 pounds. In my experience, it wasn't until I hit 350 that I started to look super massive. Once I got started on my diet and got back down to 300, I looked substantially smaller and dropped multiple shirt and pant sizes. But going from 300 to around 255 was much subtler - I only went down one shirt size and lost an inch or two around my waist. 300 isn't as huge as you'd think for everyone... it just depends on how your body carries and distributes the weight. She absolutely could weigh around 300 pounds.

TedStixon

Correction: 300 pounds may seem like a lot, but a quick browser search into publicly available photo galleries will show that her mom is very likely to be that and more. Many galleries showing variations of distribution of fat based on height and weight exist for artists and curious folk.

Correction: The keyword is "Later". We see the mother well over a year after she's described, so she's had plenty of time to follow a diet or whatever.