@diamondoutofdust I’m sorry I’m late to the game. We are all sick in my house this week! You got some amazing responses. Like everyone said, walk in head high and as if nothing is wrong. Take pictures, just like others said, of that closet Ms. Dursley has you in.
Do NOT send yourself company emails. Print or take pics of the screen. Do not give them a legit reason to terminate. So that means keep your performance high, and write only what you are willing to share in a courtroom.
As for your point about other lactating mothers you have not experienced this - yes it will be relevant to their defense. But they will put themselves in a bind because if others didn’t have to use the janitors closet then why are you being forced to do so? Was it because you brought up your rights and they retaliated?
Lastly, unfortunately I don’t know anyone in MD. I know people in FL, CA, NY and Wash.