How can my girlfriend and I get her Mom to support us?

ok, me and my girlfriend have been in love for six months now, we are online dating but we really plan on seeing eachother. theres only one thing that stands in our way, her mom. her mom hates my guts, she tried everything for me and my girlfriend to break up. but gladly nothing worked. her mother controls her life. she tells her what clothes to wear, where to go, what to do. and its driving me and her completely mad. we both can take this anymore!!! Ive tried EVERYTHING in my power to see her. and now, since she starts homeschool again, her mom cut down her computer time so she can only check her mail. we may never get to talk to eachother again! i cant let that happen! ive asked my girlfriend if i could talk to her mother, but it seems her mother doesnt want to. and ive told my girlfriend a million times to stand up to her mother. she cant have control of her life like that. there are a couple of reasons why she doesnt like me. 1. shes mormon 2. my girlfriend is not 16 yet. well to me, religion doesnt matter and age dosent matter either. and another thing, ive tried to get her mom to see that i am who i say i am. i have a webcam. me and my girlfriend wanna see eachother so badly but first we hafta get her mom to understand. so what im asking is, how can me and my girlfriend get her mom to understand.