When a dog from the Grange attacks Cathy at her intrusion, the Lintons help her by keeping her at the Grange for five weeks. This visit permits Cathy to transform into a woman very not at all like the inconsiderate, wild, puerile young lady she has been with Heathcliff and enables her to frame close relationships with Edgar and Isabella Linton, the two youngsters living at the Grange, despite the fact that her (and Heathcliff's) beginning impression of them was disdainful.
it's common knowledge because there's no words from the fr the speech, there no quotation and there's nothing about the speech, so it's not direct quotation, plagiarism or summary, so the most obvious is common knowledge
