Alcoholism Recovery & Treatment

My sixteen yr old is gone again. Woke up this morning found her in bed with her 18 yr old boyfriend, and her 16 yr old friend on the floor with her boyfriend. She didn’t have anyone over when I went to bed. I kicked everyone out but her, we argued, fussed, and fought. I went to work and she evidently ran away…. AGAIN. She is in therapy, and we go to counseling, she is still failing school and has been caught with drugs and alcohol. Is there anything I can do…. Call the cops… send her to boarding school.. I have two other younger children, and it is destroying our home. Do I have to keep trying??