Is a person's confiding in her friends about what a relative did to her, which caused her problems and accused her of lying, considered backbiting, especially if they do not know her or have never met her before, and does the ruling differ if they will help with advice or not?

The summary of the fatwa is that the basic principle is the prohibition of mentioning a Muslim in a way that he dislikes, and that is backbiting (ghibah). However, scholars have made exceptions for cases in which backbiting is permissible, including: the oppressed person speaking about his oppressor to the extent of his injustice, and presenting the matter to a consultant for help in finding a solution. It is not considered backbiting if the person being spoken about is unknown.