She must really be panicking because she knows after the surgery, she will only be able to have food delivery for awhile. She won't be in any condition or allowed to drive for at least a month. So she is getting it all in now
If she is having the surgery, I do feel bad for her only because she is going to be miserable. (I know I shouldn't) She will not be able to sleep on her side because when she tries,, even using a pillow to prop her, the weight of her stomach shifting, will pull on the incision. She probably cannot sleep on her back because her weight doesn't allow her to breathe. I won't be surprised if they have to keep her in the hospital or send her to a rehab for a week or so. She has a high risk of it opening up and infection.
The liquid diet is most likely to clean her out, though I kind of question why it would take two weeks. Trying not to power level, but when I had my hysterectomy, I only had to drink a liquid laxative 2 days before, liquid diet the day before and no eating at all 10 hours before the surgery.
I think she is scheduled for some kind of procedure, I just don't think its what she is saying it is, nor is it bariatric.