Well, it was a joint account, the bank probably did nothing wrong by permitting her access to it. In order:
Close the joint account and open a new one in your own name.
Write a demand letter to your estranged spouse if you have not already done so, demanding return of your money, and giving her "x" days to pick up her property, telling her that if she does not, it will be deposited at a self-storage place with only the first month's rental paid, so she will have to pick it up from your parent's place, or from the storage unit, or lose it. Then actually do what you say.
In the meantime, if you can't afford a lawyer, go to the Clark County self-help center website, and find the general form for divorce, and file for it; also look for the form for a motion; if she refuses to return the money, file the motion asking the court to order her to do so as part of the divorce you request.
Answered on Oct 08th, 2014 at 7:42 AM