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

Explain to her that you feeling overwhelmed and try to get her to understand how you feel. Then ask after she understands how you feel ask her very politely to give you some more space.

Approach her kindly and be nice about try subtly telling her before putting it out there straight away as it could cause a lot of friction in the family relations. If telling her subtly doesn't work then you could maybe try a more direct method

It depends on the situation. Is she interfering in your relationship with your partner or your kids, or is there something else going on? If this is the case, I would tell her directly that if you need her help, you will ask for it. If it's something relatively minor, you could ask your partner to intervene.

Talk to her in a calm but firm manner. Tell her why you are mad, and what she could do to be a better mother-in-law. If that does not work, be stronger, and tougher in your answer.

Maybe try to think about exactly what it is she's doing that bothers you. Try to think of why she would be behaving this way, and try to think if its stemming from a good place in her eyes. Take the time to calm down, and come up with a plan of what you'd like to calmly say to her. For example instead of saying " You need to back off", try going with " It really upsets me when you do _____" And maybe offer suggestions on how you think your relationship could be more constructive.

Just talk to her calmly and try to work your way to get to main point without causing a fight or the impression that you hate her or what have you. Sometimes when people bark are others about something, it doesn't accomplish anything and it's just bad. If you talk to her calmly and assess everything that needs to be spoken about, she might understand and respect your wants. Good luck! :)

React calmly, try not overwhelming the conversation. Ease your way onto the topic of your mother in law backing off, explain what she should be less invested in. If the conversation takes a turn for the worst, step away and take deep breaths to ease and calm your mind.

Usually, it's hard for a mother to fully be aware that her daughter/son is a grown up, with a life and a partener. I think the best way is to tell her that you appreciate the help and as soon as you need help, you know that you can count on her, but for now, you really want to manage things with your partner. If your mother in law has an influence in your partner, you can talk to her/him (with the partner) about it.

There are many ways to do that, but what i believe is that you should find a way which would not strain your relations. Harsh words do generate results at times very quickly but they also cause a long term damage in the relationship which becomes very hard to amend. So try and do so with the utmost subtle manner, and trying to convince that what you are doing is best for everyone.

With mother in laws, you never want to get on the wrong side of them, or come across as too harsh as that's your husband's mother. But, if she is getting involved too much, and trying to control things maybe you should sit down with your husband, and figure something out together. If you aren't comfortable talking to her in person about it, maybe message her.