Pay Back My Car

my name is Lucinda and I'm 25 years old. I am going through a divorce at the moment and had to pretty much start from scratch. I'm now residing with my mom and she has been my greatest comfort though everything. The greatest sacrifice she made was purchasing a vehicle for me, a Chery QQ3. I am now trying to pay her back every month for it bu giving her half of my salary every month, but its still very stressful on her and myself. It will take me quiet some time to pay her back without assistance. Please, if anyone could help me it would be greatly appreciated.