Narcissistic individuals begin looking for a new supply before they are legally separated or divorced. They will also play the victim or use other methods to extort money. They stew and act out and guilt trip just to get money. As you are noticing you now have to watch your money. Often they use it to buy alcohol and fund their night out clubbing as they search for new supply.

You are devastated yet she is advertising herself searching for supply. This is how they are, never satisfied always using and creating drama.

After a while you will realize that you really are better off without her.