Yesterday, my little sister coughed up blood, which didn't happened for a couple of years.
She was born with liver failure, but she is still very strong.
I as her elder sister, just feel so helpless, due to the covid pandemic, visitors are restricted. 
Not being able to see her is killing my anxiety, and I can't stop having sudden urges to cry.

If you have any tips on how I can cope  with this.
Please kindly leave some answers..

I have really bad anxiety, so it's been very difficult to manage my emotions.