I am not sure what you mean by you claimed her wages on your tax form, but if you mean she never received a W-2 or a 1099 form, then I would highly recommend that you pay her what she says you owe her. The reason I say that is because you are exposed to legal issues with the IRS, State tax officials (for income, workers' compensation and unemployment
taxes) and the State Department of Labor
for wage law issues. In other words, it is not lawful in the situation that you described not to treat this employee as a W-2 employee. So, if she really wanted to cause problems for you she could file complaints/fraud reports with the IRS and the State.
If I have misunderstood the facts, please let me know, but based on the few answers I received, that is the legal situation. That said, even if she were a W-2 employee and she made this mess, then under Washington wage laws you would not be able to withhold her pay from her. She must be paid her regular wages or commissions earned as agreed to. Then, if she intentionally destroyed or broke your property, or otherwise cost you money to get back into business, then the appropriate venue to handle that is to sue her in small claims court. But, you have to separate her wages from the other issues and handle them separately. Otherwise, you can find yourself having some major problems with the State Department of Labor, and tax authorities.
Please let me know if you need any clarification. I would be glad to assist you further if I can.