You and your sister together will give you both much more strength than if you try to make changes all alone. You can protect each other by reminding each other how precious she is and by wanting for her a peaceful, safe life. In protecting your sister, by wanting the very best for her, you will be protecting you, too. Sometimes we can fight for other people better than for ourselves.
Together the two of you can build security and safety and happiness.
It's nice to see you here again. Many blessings, lesa.