Need A Corporate Lawyer To File a Lawsuit

We owned a celebrity photography company for decades and broke up for the past 8+year ! I have sent her a Demand Letter by email and whatsapp but never answered . Now I want to sue her for some of the followings 1) Copyright Infringement 2) Denial Of Access and Withholding of financial information 3)Declaratory Judment 4) Accounting and Damages to name a few