Is it legal for my mom to take my car from me?

My mom bought me a 2016 Nissan Altima earlier this year for to purposes of driving uber. She put 3,000 down on it and we took out a loan together on it for 16,000. I am a co-signer for the loan and my mom is the primary. My name is on the car, insurance and the loan. Both of our names are on the car. The agreement was for me to make all the credit card payments and loan payments for the car and for me to save money to benefit myself and go to school. Within the first two mths my mom to my car away because I could make payments because I didn't pass my car inspection. Now I am driving. I am making payments. She is threatening to take my car away for me. Is this possible?