How do I hang out with her?

So my girlfriend and I are thirteen, and her parents won't let me hang out with her because I'm a lesbian and they think it will "make her straight". I live in the country and she lives in town, so we live around twenty miles from each other. All we are allowed to do is text each other, and her parents object to that also. My dad never goes anywhere, and my mom is always at work, so they can't drive me to the park or anything so that my girlfriend and I can hang out. What do I do??