Do you think my mom was being mean (be honest)?

Today she was helping me and she said to me, "This is the last time I ever teach you to drive. I can't! You are a Tasmanian devil!"
I yelled, "Mom you can't just give up on me! You promised to help me!"
Then she said, "Not if you're going to be poor student. You were on your phone and you're not suppose to be on your phone, you almost crashed us into a building and you barely took this seriously! I'm done. If you're not going to take this seriously, you shouldn't be driving aand you'll never be close to a license! That's the truth." I was shocked what she said. Now I feel bad.
Now I don't know who will help me. My mom can be so brutal sometimes. Do you think she was too harsh?
She called me a Tasmanian Devil! How rude! I have my permit and my mom said I'm a bad driver.