My Mum wont let me train on a regular basis?

shes says it cost too much money to drive their twice a month because the price of petrol is high.But she can spend 5000 euros on a coach just like tht.It looks bad on me when i only do group training once a month when other ppl from my group go their all the time when group training is on.What should i do,because when i confront her about it she always says the same thing like ... dont start,i dont care iam annoyed,u r so spoilt etc... No iam not spoilt i just want to train in the sport i love twice a month and not once a month!