Although it bleeds a lot and can be terrifying, it's not a big deal at all. It happens to me a lot (but I cut a lot of bunny nails!) and nobody has ever had any long-lasting effects. In fact, they're usually back on the ground running in a few minutes! Even with a lot of practice, it's easy to hit the quick by mistake. Others have mentioned good alternatives to styptic. As long as she's acting normal, she probably didn't lose enough blood to have problems (even though it may have looked like it!). If there is a scab on the nail, it should be fine and probably won't open up again. If it doesn't look sealed up, perhaps try one of the styptic alternatives and give some cage rest. Definitely don't let her claw on anything (like grass mats, carpet) that could disturb her scab for a few days.
My least favorite experience with cutting nails was once when I was cutting the nails of the shelter bunnies. I help at an "adoption center" inside a local pet store, which is basically a room in the back of the store with big windows where we keep the buns and let them exercise. I got the quick of this one bunny and got blood all over my shirt, with people staring in through the window!! I didn't want them to think I was a bunny killer, so I had to change my shirt!