horrible mother in law

Hi, I would like to know how u ladies would handle this situation, things to say, ways to shut her down, etc. my mother in law is so manipulative, and dramatic. She constantly undermines me as a wife and mother. She will do petty things like if she knows I'm making my husband a good dinner, she will call him and tell him she made dinner and tell me to pick it up. She comes over to my house and clean when I'm not home, but my husband is. She is constantly overstepping. like I can't take care of my husband and family. like I'm not assertive enough. like I need her, or he does. we Don't. trust me. my husband hates it too. I need to make it clear to her to back the f**k off! when I'm around his fam. Ist like in the weak chicken, and they are pecking at me, because they outnumber me. I don't want to just give her the silent treatment. I want her to know that I can stand up to her and will not be treated like this. please be specific. What would you say when she does these things?!