Does she have a crate? Pingo likes to be confined during storms. She's terrified too. I fill her a kong with peanut butter and put her in her spot(she likes under the couch, but a crate is better!)

Try to stay calm yourself. Casey will respond to your behavior. Act as normal as possible.

If you have any rescue remedy, give her a dropper full. It won't take full effect since she's already worked up, but it will help.

Good luck.