My daughter dignosed as Borderline personality disorder can any one tells me how to overcome and best treatmen

she is 22 she was given 45 mg Mertazapine and 75 mg Qatapine by a consulant psychatrists here in UK but she was not getting better here .so we gone to S.India where she was dignosed BPD whre as here in Uk she was dignosed Depression.In India they took off all medication and they are treating her with CBT(counselling) only.She is getting better with CBT and Occupational therapy but its very slow.