My sister was just diagnosed with sle, how can I motivate her to keep fighting?

Lupus support group. She needs to meet other lupus patoents whose dissed is under control. This way she can a light in front of her that the symptoms can be controlled or hopefully gone.
Support. Our loved ones need our support during tough times. Show your sister that you care about her wellbeing and that you support her emotions. Your support will help to make her stronger.