I'm so sorry to hear about your son's cat. Could she wave ingested something in the storage place? I would definitely take her to the vet asap!
Hope she feels better soon! Please let us know what the vet finds...
definitely get her to the vet asap. could be a number of serious things. good luck!
I second the above comments. You need to take her to the vet ASAP.
Good Luck.
Let us know how she is doing.
I agree with PrettyKitty and Marisspossa, the symptoms are too serious to do the wait and see with your cat.
I am thinking some kind of poisoning, possibly carbon monoxide. This sounds life-threatening, please do not delay getting kitty to the vet.