I feel you, ugh. Rant away! Rolls... in my back!?!? Well that's new. *Yelling from the bathroom* "Babe, the mirror is broken, this one has some bald chick with no neck in it who keeps staring at me." :lol: EEEESH.
Yeah, it was described to me as "if you lose 2kg of yourself you lose 2kg of fighting power" because the dose becomes too strong for your body. I don't know how accurately that translated over to me, but that was my understanding. I'm 5'4 and when I was 49kg friends would describe me as "skeletal" and it's barely within the healthy weight range, so I do understand where their concern with your treatment comes from. It's your normal, but it's their danger zone.
Some days during chemo the goal was just "eat any food you smell that doesn't make the room spin," and that thing would end up being a health nightmare. But you've got to eat to heal.
Waiter: Miss, I think you've had enough
Me: But this is the only thing my chemo isn't making taste like butt-hole risotto
Waiter: But you've had 7 slices of Madeira cake ma'am, perhaps you would like to try the stea-
Me: I SAID FETCH ME MADEIRA CAKE, FOOD SERVANT.
...Yeah, this never happened but you get my feels.
On the note of dealing with it all; I think that having to sort out weight issues is recovering Molly's focus. You have so much more going on right now. I'd say eat the burgers, get the nutrients, be kind to yourself in front of the mirror, come out the other side of treatment, and then if it still bothers you get to doing things about it. Yeah? xo