Very horrible and frightening story--can't imagine what you sister had to go through. But also an amazing story of love, heroism, and care from you, your family and friends who helped, and especially your sister. Thoughts and prayers for best to all of you, and critically that your sister does not ever have to experience this again.
Hoping and praying around the world that progress is made in better understanding, addressing, and alleviating any type of horrible offense--offering full support, resources, and care for survivors to heal and rehabilitation and treatment for offenders. So much evidence shows that in the U.S.(as well as this story's place of Scotland and every corner of the globe), the pandemic of mental illness is an extenuating factor impacting many offenders--certainly passing on unncessary mental and spiritual distress to victims. I send the best of prayers and thoughts for your sister to find healing from this ordeal.