Nan Zhubin's judgment on Li Lingling's current mindset is based on two aspects.
First, Li Lingling's past situation—she is a visitor with Borderline Personality Disorder.
And from the core symptoms of Borderline Personality Disorder, Li Lingling's obsession with whether her mother abandoned her is essentially a demand for Self-value confirmation driven by the disorder.
After all, one of the core issues for visitors with Borderline Personality Disorder is the fear of abandonment, and they tend to forcibly bind others' actions to their own self-value. For Li Lingling, her mother, as an early core attachment figure, her "departure" is an important benchmark for Li Lingling's self-value—if her mother didn't abandon her, then "I am worthy of love"; if abandoned, then "I am worthless."
This makes it impossible for Li Lingling to establish a stable internal identity; she must rely on external signals to anchor her existence's meaning.
