I honestly don't think you could be 30st by the age of 23, as she was, without serious food issues/ addiction.
I may have said this before but I find it surprising that her family are average sized/ don't seem to have problems with food, her mum is even a paramedic so I wonder where the weight issues have come from. Photos she's shared of her in her mid teens she seems to have been the size she is now or bigger, so it's not like it all started when she moved out to live with Jack (who I remain convinced is a feeder!) .
Her food addiction means she's constantly pushing boundaries, at first she'd make a big thing about not drinking with her food, now she's showing herself eating and drinking at the same time. Again at first she drank loads of water...no mention of that now. She was watching her protein but again not doing that any more. She's still losing weight (although that's slowed right down, 10st at start of Jan, 11st as of today, that's a stone in 2 months. Which for normal weight loss is fine but at her size with a sleeve you'd expect more) but it's clear that nutritionally she's not eating the right things. Too much carbs and sugar, nowhere near enough protein.