Okay, so the ring is stuck a little?
First, don't stress. Get in a comfortably position; I've found that sitting on the toilet is the most comfortable place for me when inserting and removing things from my vagina. Now... relax. Loosen the muscles in your vagina. Next, push down; you should be able to control some of your vaginal muscles while reaching inside and feeling for the ring. It's probably slippery but don't worry and don't get frustrated. Even if all you can do is pull at one side, do that.
If, in the end, you can't get it out, don't panic! Ob-gyns see this all the time. Tampons, diaphragms, cervical caps... even nuvarings. All sorts of things get stuck, so they're used to it. She'll probably slip it out in two seconds, and then give you advice for how to insert it next time so you can get it out easier.