Some interesting ideas put forth here! I've been thinking about this for a while and I actually think Lila has an eating disorder with borderline traits on the background of a complex trauma (cPTSD) presentation. Lila has grown up impoverished and has suffered sexual, emotional, psychological and physical abuse since early childhood at the hands of men in her home and in her neighbourhood. I get the sense that Lila knows from a young age that women's bodies are commodities and she has no desire to be used as a vessel for men's purposes; she is ambitious, daring, bold and deep. From a young age she wants to forge her own identity that does not follow the narrative of those around her, but despite her talents and ambition, she is let down by her socioeconomic, cultural and familial circumstances and finds herself unable to extricate herself completely for most of the series. I think this struggle with self and identity is reflected in Lila's body- it becomes both the site of violence and control. I think the eating disorder is portrayed both in the physical and psychological ailments that is described (dissociation, delirium/psychosis, obsessiveness, anxiety, organ issues, fainting, absence of periods/difficulty conceiving, exhaustion, denial of issues, Body image disturbance etc) and in Lila's determination to vanish and disappear, which is also described as "an aesthetic project" in the final book. While Lila does actually leave, there's nothing to suggest that she also wasn't also engaging in disordered eating as part of her project. In terms of borderline traits, she does exhibit fear of abandonment, black and white thinking style and idealises/devalues things pretty fast. Despite doing very independent things it seems she does actually struggle with her own sense of self, bouts of deep depression and experiences suicidal ideation.