I think that there are some challenges in this situation. Like all solutions in education, I think that there has to be some level of action from all parties involved. At some level, the student has to take a strong and pensive look inward. I think that she has to remind herself or be reminded that she is capable of academic success. At some point in her life, she demonstrated academic success. While the context has changed, the past has not. She has to go back, or receive help in going back, to identify what she did then that demonstrated success and see if those elements can be brought into her current context.
Whenever there is a doubt in a student's capabilities, some level of outside intervention or counsel is needed. Someone needs to enter and advise the student, pulling them aside, to move them past their demons of doubt. This might be where parents/ guardians have to get involved on a private level, in terms of speaking with her so that she is reminded of her own academic success and what patterns defined them. She might also need some level of reminder that this is a different situation and it is acceptable to recognize the challenge within it. Yet, this does not preclude her from finding success for it has been found before. From a teacher's point of view, part of the element of modern teaching involves something called Response to Intervention (RTI.) RTI essentially states that when a teacher recognizes something wrong, they have to come up with ways or some type of plan that will enable the student to be successful. It forces teachers to pay attention to students who struggle, but do so in a quick manner. The teachers that "don't pay attention to her" are in violation of this spirit. They need to be reminded by the student or the parents that something needs to be done, and fast, in order to get the student on the right path. All three parties- teachers, student, parents/ guardians- will be needed to help the student, no different than any other educational challenge.