Suing my previous landlord

I’m suing my previous landlord, but now I’m unsure if I need to sue her, the country club that I lived at or both? I have a lot of evidence and this is the letter that I’m going to send her.

I’m thinking maybe I should add the name of the country club and her on the Small claims form. I’m just conflicted because when she took over, she did nothing to help, but the previous person was extremely helpful which is why I’m thinking maybe just her.