This is America and you can be sued anytime by anyone for anything. The real question is if they will win. The other big issue to consider is if you want to spend what it will cost to defend yourself (10's of thousands of dollars.)
If you took the video, you own the copyright. Unless you agreed in writing not to use video in her studio, or she has signs posted that video cannot be shot, I do not see that she has a cause of action.
While I don't think you did anything wrong, my advice to a client who came to me with these facts would be to just take down the video and move on. Fighting is not worth the expense.
This post is provided for general informational purposes only and is not intended to be legal advice specific to you. This general information is not a substitute for the advice of an attorney in your jurisdiction. The attorney client relationship is not established by this post.
Yes, if you break any laws or infringe any IP rights.
This is not a legal advice or solicitation, and does not create an attorney-client relationship. Consult with an attorney. I work for Cardinal Risk Mangement and Cardinal Intellectual Property, IP service companies, but not law firms. I also am the president of Vepachedu Educational Foundation Inc., which is a non profit educational foundation. I also write cultural and scientific compliations for the foundation. I also teach at Northwestern university as a guest lecturer. I also provide some pro-bono guidance on immigration and other issues through Indian American Bar Association. I also have a contract with Cardinal Law Group, a law firm, for IP projects. All this information is on my profile at Avvo and also at Linkedin. Any views/opinions expressed in any context are my personal views in individual capacity only, and do not represent the views and opinions of any firm, client, or anyone else, and is not sponsored or endorsed by them in any way.