Stalking my account

So I'm 20 years old, recently moved back home because I was cheated on. Few days ago I went to spend the day with a guy who I haven't seen/talked to in 3 years. We used to be really good best Friends and I didn't want to go home, so i ended up staying the night with him. I asked my best friend of 15 years to cover for me since I knew my parents would flip if they knew where I really was(they hate me driving). I took the ferry home yesterday, and just told my mom my best friend and I hung out and played games.

Well today my mom called me in and asked why I had gone to Seattle. Apparently she can see every transaction in my bank account, saw the one for Seattle, and I questioned why she had access to that. I'm beyond annoyed. I didn't realize shes been constantly watching my every move since I got my account a few years back, and I want her off.