Nobody needs to be a medical professional to know that Amber eats garbage, gets diarrhea because she ate garbage, and then calls it "being sick" for sympathy from anyone who'll give it.
When she tells these stories about throwing up so much that her back is sore, who is buying it? More importantly, how exactly can someone her size kneel in front of a toilet? And not just because the act of kneeling is impossible for her, I mean her fitting inside the clearance between the wall and the toilet in an apartment bathroom, which are generally small and compact. If she made a video explaining the logistics of all this it would be more interesting than any video she's made this year. Does she stand in the shower and just puke towards the drain? Puke into the bathroom sink like a drunk girl at a bar? Make Beckster haul her up a bucket? Is that why Becky wants to hurt her?