What you don't know can't hurt you.... right?

I had a fallout with my insensitive friend who would always say mean things in an innocent good conversation, she would make sneaky jabs.... last week I stopped answering her calls, yesterday she knocked my door I looked hole thingy and ignored her, so she left a recording on my WhatsApp, I'm tempted to listen but I'm very sensitive incase she starts yelling or swearing.... should I just delete it without listening after all what you don't hear can't hurt you!