too extreme?

Ca

Okay so I've been having issues with my mother in law this entire pregnancy. I won't go into too many details now. However I recently found out she posted some of my ultrasound pictures on Facebook, without telling me or asking me. I find this a huge violation of my privacy and feelings. Now I'm thinking about telling her she is not allowed to take/post pictures of my son when he is born, or if she is to ever watch him (having issues with that too), or I will no longer let her see him. Is this too extreme? I value my privacy and I want my son's privacy to be valued too, when he is born. If this is too extreme, can someone give me advice/ideas/help?