As I understand Catholic teaching, and so, if in any of this I do not articulate correctly, please take that as MY error and not the Church’s, but as I understand it, and as I believe it has always been understood, rape is a sin against purity and chastity. Virginity should be highly protected by both the individual and society. Where it is lost through rape, the rapist is the one who commits the sin against God and against the woman whose virginity he has STOLEN. Her physical virginity is something that cannot be restored, and the emotional and mental anguish that is inflicted on her is to be abhored, while she herself is guiltless of personal sin against chastity and purity. While she is no longer a virgin in the physical sense, her innate dignity as a person who has been unjustly attacked makes her a model of the suffering Christ.
In particular, St. Maria Goretti, who had long fought against the ever increasing suggestions of her attacker, in which he ultimately tried to force her, was unsuccessful, and angrily stabbed her, so that she died the next day, showed heroic resistance and a heroic determination to preserve the virgin purity which she received from God and which she wished to preserve as far as she possibly could.
She is the patron of rape VICTIMS as well because it is the unfortunate case that even those women who fight back can be overcome. . .and ‘fighting back’ is not limited to physical means, but can also be done emotionally; if one is physically unable.
This young girl in the OP apparently had lived a similar life; her friends, like Maria’s friends, spoke of her strong faith and her strong desire to remain chaste and pure for her Almighty Father.