Tasha suffers extreme stress with thunderstorms too. She will sometimes start crying the moment the wind picks up outside before the storm actually moves in. For Tash, I try to take her downstairs into the basement to her nest on the sofa. It's underground down there and the sounds of the storm are muffled, and she can't see the lightning down there either. I'll have her curl up in her ball and even put her blanket over her (she likes sleeping that way), and it seems to help quite a bit unless there's some really loud crashing like when lightning strikes. In that case there's not a lot I can do other than try to be calm for her, even though those huge crashes can even shake ME up!

I know that in severe cases, there might be an anti-anxiety sedative you could give her... I can't remember names right now but I know there are ones for dogs with severe separation anxiety and that type of thing. Maybe this would be an option for Nala since it's to the point where she actually becomes sick. I'd talk to your vet about it and see.

Best wishes and many hugs for Nala