I know my post is already so long, so I thought I'd throw a few examples down here for anyone who wanted a little more context.

She is a compulsive over-exaggerator, to the extent that she's grown to believe her own stories. So she will straight up lie about a situation, and if you call her out on it she will go absolutely bananas once she's fired up (I'm talking screaming, growling, the works). She once shouted "I MAY AS WELL GO SHOOT MYSELF IN THE F*CKING HEAD THEN" when I jokingly called her out on a little fib while we were in a restaurant with friends. She later denied ever having said this.

She's that person at a BBQ who has an opinion, but will tell you that yours is wrong and will not back down. You could have worked for an insurance company for 20 years, and she will still try and tell you about how insurance works. She knows everything about everything and will not be told otherwise. Talking about how grocery stores work? Well she worked at once 20 years ago, so she'll let you know exactly what the current procedure is.

If you push too hard, she'll snap, and it's honestly like a bulldog attacking.