To let a friendship go

[Anothernamechange2020]

Changed name for this question.
I have a friend who I want to gently leave the friendship.
She is nice enough but a know it all. It has really started to irritate me to the point where I have found myself avoiding her.
If someone starts a conversation with me, she will interrupt and answer the question for me etc. I have seen other people look slightly annoyed / taken aback at this too. I think sometimes it's insecurities that make her behave like this but it is tiring.
AIBU to let the friendship go or should I persevere and be nice about it?

You are not unreasonable, but you should first talk to her instead of letting her go, especially if you are close. Tell her how you feel and that you are bothered by these gestures, and if she still doesn't make the right changes, slowly step away from her, but don't let her go completely. Maybe a bit of a cold shoulder will make her understand. If that doesn't work either, call it quits and just move on from your friendship with her.

Depends how much of a friend she is. Some friendships aren't meant to be.

@EmilyC82 yes you are right, I should talk to her. It's hard because I think it would hurt her feelings. But I also feel it's wrong to just walk away from the friendship (even though at this point, I do)
Thank you for that advice.

I had a colleague who used to do this, frequently. Every time she did, I said "Oh, I said that without my mouth moving".. (plus a ). She soon stopped.

Of course it may hurt her feelings but that duesnt mean you shouldn't speak to her about what's bothering you.

you've already started to avoid her... what else is there to say?

The last time I saw her, I told my DD off for something she was doing, my friend then proceeded to tell her off some more (it wasn't related to her in any way). She just can't help herself but it's irritating.