i love her but we cant be together?

im 16 the girl i love is 15 we have been dating for 2 years i Absolutely love this girl shes my best Friend we get along so well. i must talk to her 7 hours a day at least we never get tired of talking. she goes to a diffrent school and lives 30 min away so we only see each other once maybe twice a week but i love her so much the time we spend is great. so 2 days ago her mom decides were too attached and breaks us up. she says she will never be allowed to talk to me again blocks my number hides the house phones not allowed to use the computer because we are too close. i pleaded with the mother she says im no good for her. i respected this girl and treated her better then i treat my self. i was always very respectful to the mother we were so in love i still love her i cant stop crying what do i do?