How can I tell my mother in law to back off?

Maybe try to have a conversation with her nicely an say how you feel, if that doesn't work then maybe try something else with her to get your point across.

I believe that you should let her know her boundaries in the nicest way possible; shes just your mother in law, not your actual mother

If she's trying to protect her daughter, it is admirable and you should be okay with it, but if she's being over protective, you have to confront her about this issue and tell her that you need to come to terms with what is happening.

It definitely depends on the details of your situation, but in general I recommend being as polite as possible while clearly identifying behaviour that you would like her to stop and giving a personal reason why. It helps if you are also empathetic. For example, "Mother-in-law, I know that you are trying to be helpful, but I would appreciate it if you didn't criticise my housekeeping. It's difficult to not feel insulted by it. If I need advice, I'll ask you directly. Thank you." However, some people will not respond to this method, and you may simply need to reduce your contact or emotional investment in the relationship on your end. It's definitely a difficult problem. Good luck!

You may not be able to. You can try to do so with tactful words and deliberate distance (harder with kids). But ultimately, your husband or wife must set their own mother straight if she's out of line. Its the only way this will work long term.

A better way to give to tell her is maybe telling her how you feel and what she's doing if it's affecting you or maybe slowly distance yourself from her but keep in mind she's still going to be in your life but try and be cordial relationship and simple I hope I answered your question well

First, a good measure of perspective can help. Your step mother is a human beings with feelings and issues and the ability to negotiate, understand and evolve, and this is how you'll think for the duration of the exercise. Then, take a piece of paper and try to write all the things you feel like telling her, things you have issues with, things she does that hurt or upset you. Think also of what YOU can do better, what YOU can improve. Show that coexisting means work from both sides. Organize what you just wrote, and try to communicate it again. If verbal communication is difficult or impossible, try writing a letter!

if she is being all close and personal , you can always just ask her to please give you and your fiancé a little space .

Ive told my mother in law to back off in a calm polite manner by confronting her and telling her how i feel.

You can tell her very politely that you just need some space to do things on your own and if you need any help that you will ask for it.