Her: Can you please get my old white comforter from the basement?  I hate this one.  It's so ugly.  Why did you let me buy it??

Me: That's mean.  I gave that to you.  That's mean because that's what you got mad at me about when I gave it to you in the first place, you said it was so ugly.  

Her: No!  I bought this, don't you remember??

Me: No.  You.  Did.  Not.  I bought that.  Not you.  

Her: No, I did!  blah blah blah blah (I tuned her out at that point)

Me: No, that was (my youngest son's) old blanket.  I bought it for him.  (In actuality, I bought for my other kid, but he gave it to his brother, so I was wrong in that part).  And you needed a blanket because you hated the other one you had, and that was the only clean one.  And you complained you hated it because it was so ugly.  But there was nothing else, so you kept it.  

Me: That's fine.  Just stop saying it's ugly.  

Her: Well, I only said that because I thought I bought it. 

Me: No you didn't.  Because you said that when I gave it to you, knowing it was (my son's) blanket.  

Her: (puts on her innocent voice for pity) Well, I forgot.  

Me: Of course you did.  

My oldest son thought I was defending them, by getting angry she was calling their blanket ugly.  I told him no, I was not defending them, I was putting her in her place to stop being rude.  Everything I give her, she has an issue with it.  Everything I make her, she tells me how it could be better.  Everything is a rude comment with her.  So I was angry she was being rude again.  And that she was making up lies.  I cannot say it was her dementia (though she uses that to her advantage to get out of sticky situations), because this typical of her, to make up a lie about something.  To say she bought the blanket and has an entire backstory for it, some imaginary trip we made together to go get it.  She's done this for my entire life.  She gets caught being an asshole, and so she lies to get out of it.  So I didn't let her lie her way out of it this time.  Even if it was her memory issues, it doesn't matter.  I wasn't mean to her or rude or stern with her, I just didn't let her lie. 

It feels good and healing to me be able to do that.  For my entire life I never got to set her straight about so many things.  God, the lies she's told and gotten away with.  But now, I get to correct her and make her 100% aware nobody believes her.  And maybe one day she'll realize, nobody ever has.