That is such a difficult situation to be in. My heart goes out to you.

I worry a lot about my loved ones. Here are some suggestions from my therapist:

Try your best to ameliorate the situation, e.g. by comforting your loved ones, directing them to professional help, taking care of other people who might be affected, asking close friends to help you out (e.g. if you have too much on your hands). After that, try not to beat yourself up. You've tried your best. The situation is no longer in your hands. Worrying/panicking more does not help you or your loved ones. Rather, you can fall into a vicious cycle of panic that also infects your loved ones.

A few hours before the end of the day, write down everything that's worrying you or making you go crazy. Then close your journal and/or rip out the sheet of paper and toss it into the bin. Tell yourself that your worries have been dealt with for the day and can no longer bother you. It's a symbolic gesture but it helps.

Of course, when you're in a crisis, my therapist's advice is very difficult to follow. She says that you should have hope and not beat yourself up for something that's outside of your control. Have hope and step outside of your head through healthy distractions (e.g. go on walks, do breathing exercises, volunteer, etc.). Talk to people who care about you or people on these forums. Not everyone will be able to help you but they can offer empathy, and sometimes that makes you feel better.

Would it be possible for you to see a therapist? Or perhaps a doctor? If you are having severe anxiety, a doctor can provide you a short-term prescription of benzodiazepines to help with anxiety and sleep.

I'm here to talk and offer any support that I can. You and your family will be in my thoughts.