i’m a mental health professional and my sister is suicidal

that’s about it. i feel like i would be well equipped to help her. but i can’t. she’s been hurting herself and has passive SI. i’m so scared. i’m so exhausted from my job and we live about 1.25 hr away from one another so i can’t go see her all the time. i’m helping her get set up with a therapist and psychiatrist right now. she tried reaching out to our parents and they just told her to talk to me.