83 yr. old sounds and acts like a child, when gets upset. Advice?

Can you give us a bit more information? Do you have a question?

I know my mother was adopted and her young life was not good. She was pushed into marrying my father, who she didn't love and never did. She had us 3 kids. I am the youngest (49) . My husband & I moved back with her 3 yrs. ago, we need a place to stay. I tell my mom she has done something wrong & she says in a childs voice " I know, I know !" Then stomps off. *** That's the a bit of info, you will have to wait until I write my book for the rest. ***

Some people just can't accept the idea of being wrong. At least your mother admits it, rather than denying it or trying to point the blame elsewhere. Of course, her reaction doesn't leave much room for changing the objectionable behavior, whatever it is. So why not start there? Rather than telling her she's done something wrong, ask her for the change you would like. Like "Mom, could you let me finish what I'm saying before you start talking?" Rather than "Mom, you constantly interrupt me!" Just a thought... Other than that, I'd suggest either accepting her the way she is or moving out. Most people don't change their personalities after a certain age (or at all).

You moved back in with Mom because you needed a place to stay? Does she need any caregiving? Are you providing caregiving in exchange for room and board?

It's hard to have someone tell you that you are doing something wrong when you're an adult. It makes you feel like a child.

I'm curious what you believe she's doing " wrong". Does she have dementia?