If this question is based on Billy Milligan story, than yes :) There were real examples, although just a few of them during the whole history, or maybe noone knew about such a syndrome earlier.
Women are likely to experience domestic abuse in a relationship,around 85% in comparison to a males 15%.Around 1 in 5 women suffer physical violence from their partner.
Answer: Empathy
Explanation:
Empathy is defined as the capacity of an individual to understand and feel the emotions and feeling of other individuals.The person tends to place their own-self in the situation of other person to experience about the actual feeling of that person.
According to the situation mentioned in the question, Rosalina is using empathy method to understand the difficult state and feelings of her friend with her boyfriend through putting herself in her friend's place.In this way Rosalina can completely get to know about the issue.