Who is in the wrong?

my mother was mad at my little brother for being a dumb shit then she started using my old phone while scrolling she decided to review my chat messages and saw me swearing i mean what teenager doesn't swear then she decided to look at ALL my chat history everything that i wanted to say was revealed every chat messages of me and my friends she saw all of it then she decided to lecture me about proper talking and no swearing but all i wanted to do was to yell at her face and tell her to stop invading my privacy.