Mayo Clinic said:The range and severity of symptoms can vary widely. Common symptoms include difficulty with communication, difficulty with social interactions, obsessive interests, and repetitive behaviors.
People may experience:
Behavioral: inappropriate social interaction, poor eye contact, compulsive behavior, impulsivity, repetitive movements, self-harm, or persistent repetition of words or actions
Developmental: learning disability or speech delay in a child
Cognitive: intense interest in a limited number of things or problem paying attention
Psychological: unaware of others' emotions or depression
Also common: anxiety, change in voice, sensitivity to sound, or tic
She is unaware of other's emotions. She will either project onto others what she is feeling, or assume them to feel the way she would as a reaction to an interaction.
She mistakenly believes people are attracted to or in love with her, without any signal from the other party. This belief can stem from existence of interaction, or from lack of interaction.
She has a history of focusing intensely 1 to 2 interests at a time. Often that interest is pursuing a man, but for periods of time she has focused solely on weight loss, building a website, and running a discord server.