I've never for the life of me understood why people on here act like it's unrealistic for one person to have gone through all or at least most of those experiences.
If anything, the high rate of comorbidity for these problems increases the likelihood that she struggled with or has been through more than just one or two of them in
her life due to how inter-related they are.
Most people who end up abusing drugs/alcohol have serious underlying self-esteem issues and/or been through some traumatic experience(s), which are also precipitating factors for the development of an eating disorder (both disorders are symptomatic of an attempt to maintain control - over how you feel and how you look).
It doesn't seem unlikely given how much she's talked about being uncomfortable with celebrities that she may have felt out of place or judged by her peers in high school (which is a fear that lends itself to unknowingly exaggerate the degree to which others are scrutinizing you).
Also, I think something like 1 out of every 3 females will have been sexually assaulted at some point in their life, but the frequency with which these occurrences go unreported leads to a distorted perception of how many people have been victimized.