First of all, no panic! Here I'll try help people that are with problems right now and give tips to protect yourself! ~chitandasmileplz (https://www.deviantart.com/chitandasmileplz)
Will this go unpunished?
No.
Apparently her (ToxicMutagen (https://www.deviantart.com/toxicmutagen) Pixlett (https://www.deviantart.com/pixlett)) paypal account is closed and she will never be able to create a new one, check here:
What to do if this happened to you
File a claim with the BBB (Better Business Bureau), and probably you'll get your money back.
More info in the journal:
These links may help too: Paypal Customer Service | Artists Beware Live Journal
And don't be sad! All will be ok again, you're an amazing artist for working so hard, you can do it! Go go go!