I've found that disappearing without a word (the fade away) sets things up nicely, no need to even dump them. If you sense her withdrawing, just stop talking to her and drop off her planet. In most cases, after a few days she'll try and reconnect after awhile because it's a good enough mind fuck to jolt her system, and you'll have regained hand. Then, it's back like normal. I've strung along quite a few girls like this for very long times, it's very potent.
On the other hand, if she doesn't try to reach out to you after the fade away, then you were toast anyway. Even then, a chance meeting in the future still leaves room to reopen what you had because the fade away is that good. Also done that before.
On the other hand, if she doesn't try to reach out to you after the fade away, then you were toast anyway. Even then, a chance meeting in the future still leaves room to reopen what you had because the fade away is that good. Also done that before.