Yes it is. Everybody is different, but I grew up with a raging alcoholic narc who convinced me for a long time that deep down she was this amazing, caring wonderful woman. I also grew up in a nice house with a Father who was absent a lot because of work (Mom never worked or even drove a car: seriously), I was incredibly isolated because my Mom home schooled me as well (up until I hit 10/11 and then she pretty much gave up and handed me the materials to figure it out on my own so she could drink her days away on her computer, finding randos to worship her and dudes to cheat on my Dad with).
The only reason I bring all that up is because I have a familiarity with Eugenia's struggles. You start to form this cognitive dissonance at an early age so the reality of what is really happening doesn't break you. Unfortunately it can stay with you for YEARS even after you have left the home, especially if you still have relationships with your abusers (with parents it really sucks because you feel so much guilt when you stand up for yourself, like your a bad son/daughter for not taking their shit anymore).
I recently went no contact with my Mom for the first time in my life and it was only AFTER I did that I TRULY realized how much my Mom had mind fucked me, and how much control she still had over my subconscious. Eugenia is not there yet. She still think her Mom loves and cares for her even though she had one foot in the grave and lost her shit at the only person who was trying to save her daughter's life. No Mother should be able to look at their child starving themselves to death and say "They're fine", the same mantra Eugenia repeats to everybody with that painful nervous giggle. She says she is fine because the people who are supposed to love and care about her most say she is fine, they don't know how to deal with it so they just pretend there isn't a problem. She probably feels invisible and alone.
Bottom line: the battle is in the mind. She is still living in that environment, and without frequent counseling and medical care she is at an extremely high risk of relapse.