It's been like six months since the "breakup" in March. Although it does take people different amounts of time to "move on", I'd think (at least at age 25), that you'd be ready to move on by now. Just my thoughts. But I guess it takes some people longer than others. Still. :s
Take it slow with her, like she says, but don't hesitate to hang out with other girls. If she's making you wait so long, there is no reason why you can't be hanging out with other girls. It might distract you a bit. Maybe she will come to her senses too! But try not to focus too much on her. It seems like you have clearly shown her that you're interested.
I'm a bit curious what you mean by "taking it slow". Have you kissed? Had sex? Even talked about an exclusive relationship?