Need Help Vectorizing!

Can anyone tell me the best way to vectorize this image? I have checked the Wildform Flix website and I know there is a way to get an image in just two colors without looking too “cartoony”. What I am attempting to do is cut out just Madonna in the chair, and to get rid of the background. I had then planned to change the brightness/contrast settings so that the whole remaining image i just filled in black. I tried just using the lasso tool in Photoshop but time consuming doesn’t even begin to describe that task because I have to do 200+ frames the same way. Can someone please help me out? I would really appreciate it. I have attached the image that I am using, and I can send you an example of how I want it to look in the end in an e-mail. I know the image attached is small, bu just let me know and I’ll send you a larger one. Thank you.