Trying to make frosting for my daughter's Smash cake and I had a beautiful white fluffy frosting…

Trying to make frosting for my daughter's Smash cake and I had a beautiful white fluffy frosting made it looked so amazing then I kicked the speed up to mix it all together one last time and the butter completely broke down and turned into mush. So now I'm sitting on my kitchen floor crying drinking a margarita. Thankfully my mom is running to the store to get me some frosting.