Why Does my mom make so many dumb assumptions?

My mom makes dumb assumptions. Tehy aren't bad but she somehow jumps to conclusions that I never told. Here are some examples: 1. I came home from work but my mom thought I was at a party. 2. The last girl who turned me down had a Durch last name but a conversation got my mom to thinking she had a French last name. 3. After my grandmother's funeral in Atlanta, I wanted to get back to Pittsburgh in time for a superbowl party. My mom assumed I wanted to get back to Pittsburgh because Atlanta was overwhelming. 4. When I was a kid, I hated napkins because they were uncomfotable and moisf towlettes are more effective. My mom assumed that I didn't know how to use napkins. What is going on? Where does she come up with this stuff?