I am trying to do draw some sigils and I think it's most important to focus on Demons energy, then to try to get some pictures in the head if possible how would it look like and then try to copy that on paper/photoshop or whatever. Keep it simple. Try to feel the energy of her from the sigil. Try to make it 100% accurate if possible ( the energy ). When you meditate on it you should feel the connection deepeing and it should be easier to communicate... Ask her to send you some pictures in your mind on how would it look like. It doesn't have to be the same as you see on JoS, it can be even more simple, some simple shapes, maybe even shape of an animal or some object, or just few circles, lines, but you should feel it working.