@cherimorey,
First off, I wish the best for your family. I'm not a doctor, but I do work in emergency medicine and those are all signs and symptoms of meningitis. Save for money being an issue, I can't understand why a spinal tap was not done sooner.
Viral meningitis is the lesser of two evils (between bacterial meningitis and viral). The symptoms generally last about a week and clear up on their own. There is no known treatment for it, you just have to let it play out on its own. For bacterial meningitis you can take antibiotics but because viral meningitis is caused by a virus, antibiotics are not useful.
Do they know what put her into cardiac arrest? That is NOT something that would be normal for someone with viral meningitis.