However, the valuation for divorce purposes may be different from a valuation for business-sale purposes because. as a non-attorney (I'm assuming), you cannot be an owner of her practice.
In addition, if she is a sole practitioner, there's no business without her active involvement. Speak to a divorce attorney and a professional services valuation specialist to get the guidance you need on how to handle the financial issues between you and your wife.
Nina L. Kaufman, Esq. is an award-winning New York City attorney, edutainer and author. Under her Ask The Business Lawyer brand, she reaches thousands of entrepreneurs and small business owners with her legal services, professional speaking, information products, and LexAppeal weekly ezine. She also writes the Making It Legal blog.